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Black Arrow Cyber Advisory 15 September 2023 – Critical Vulnerability in Multiple Browsers, Update Now
Black Arrow Cyber Advisory 15 September 2023 – Critical Vulnerability in Multiple Browsers and Applications Exploited, Update Now
Executive summary
A critical vulnerability in WebP has been identified as being actively exploited. The vulnerability impacts multiple browsers including Chrome, Edge, Firefox and Opera and any software using the libwebp library. Successful exploitation can lead to malicious code execution.
What’s the risk to me or my business?
The actively exploited vulnerability can allow an attacker to execute malicious code on vulnerable software, compromising the confidentiality, integrity and availability of data.
What can I do?
Security updates are available for browsers impacted; these should be applied immediately. It has been noted that other applications which use the libwebp library are also impacted and it is recommended that organisations check if the software they use is vulnerable.
Technical Summary
CVE-2023-4863: The actively exploited vulnerability allows an attacker to perform a heap buffer overflow attack, allowing them to execute malicious code.
Further details on the vulnerability can be found here:
https://nvd.nist.gov/vuln/detail/CVE-2023-4863
https://stackdiary.com/critical-vulnerability-in-webp-codec-cve-2023-4863/
The security advisory from Google Chrome can be found here:
https://chromereleases.googleblog.com/2023/09/stable-channel-update-for-desktop_12.html
The security advisory from Firefox can be found here:
https://www.mozilla.org/en-US/security/advisories/mfsa2023-40/
The security advisory from Microsoft can be found here:
https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2023-4863
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Black Arrow Cyber Advisory 06 June 2023 – Zyxel Firewall Vulnerability Under Active Exploitation - Patch Now
Black Arrow Cyber Advisory 06 June 2023 – Zyxel Firewall Vulnerability Under Active Exploitation - Patch Now
Executive Summary
A number of recently disclosed vulnerabilities in Zyxel firewalls are now known to be being actively exploited by malicious actors.
Two of these exploited vulnerabilities are buffer overflows which enable an unauthenticated attacker to cause a denial-of-service (DoS) condition and remote code execution. In addition, a further critical vulnerability has been disclosed which allows an unauthenticated attacker to execute operating system commands to remotely send packets to a device.
These vulnerabilities have been added to the US Cybersecurity and Infrastructure Security Agency (CISA) Known Exploited Vulnerabilities (KEV) catalog: Known Exploited Vulnerabilities Catalog | CISA
What’s the risk to me or my business?
The vulnerabilities, if exploited, allow an attacker to execute remote code and cause a denial of service. If this occurs it can allow an attacker to disable or modify the firewall rules, allowing further malicious attacks to breach the network – all of which impact the confidentiality, integrity and availability of data of the organisation.
Technical Summary
CVE-2023-3309 – A buffer overflow vulnerability in the notification function in some firewall versions could allow an unauthenticated attacker to cause DoS conditions and even remotely execute code on an affected device.
CVE-2023-33010 – A buffer overflow vulnerability in the ID processing function in some firewall versions could allow an unauthenticated attacker to cause DoS conditions and even motely execute code on an affected device.
CVE-2023-28771 – Improper error message handling in some firewall versions could allow an unauthenticated attacker to execute some operating system commands remotely by sending crafted packets to an affected device.
The affected firewall products and versions are patched in version ZLD V5.36 Patch 2:
- ATP – versions: ZLD V4.32 to V5.36 Patch 1
- USG FLEX – versions: ZLD V4.50 to V5.36 Patch 1
- USG FLEX50(W)/USG20(W)-VPN – versions: ZLD V4.25 to V5.36 Patch 1
- VPN – versions: ZLD V4.30 to V5.36 Patch 1
The following affected product and versions are patched in version ZLD V4.73 Patch 2:
- ZyWALL/USG – versions: ZLD V4.25 to V4.73 Patch 1
What can I do?
It is recommended that patches are applied immediately for the impacted products. Zyxel has also issued guidance to disable HTTP/HTTPS services from the Wide Area Network (WAN) unless absolutely required, and to disable UDP ports 500 and 4500 if not in use. If you are unsure, it is advised to check with your MSP.
Further information can be found here:
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Black Arrow Cyber Alert 30 March 2023 – ACTION REQUIRED: Ongoing Campaign Actively Targeting 3CX Desktop App For Windows
Black Arrow Cyber Alert 30 March 2023 – ACTION REQUIRED: Ongoing Campaign Actively Targeting 3CX Desktop App For Windows
Update 16:20 30/03/2023: Additional information relating to the vulnerable Mac version of the 3CX desktop app has been provided by security researchers. Updates to this alert have been added below.
Executive Summary
A digitally signed and malicious version of the 3CX Voice over Internet Protocol (VoIP) desktop client is reportedly being used as part of an ongoing hacking campaign confirmed against windows devices and believed to be targeting Mac devices. It is believed that this the campaign involves nation state actors.
Update: The campaign has now been confirmed to be exploiting Mac devices.
Technical Summary
Earlier this week, CrowdStrike observed unexpected malicious activity which originated from a legitimately signed 3CXDesktopApp. The attack starts as soon as the MSI installer is downloaded and launched from 3CX’s website or the application is updated. The application itself is not malicious, however, when downloaded and installed, a malicious dll (ffmpeg.dll) is sideloaded which then extracts an encrypted payload from another dll (d3dcompiler_47.dd) and executes it. The malicious activity performed includes communication with attacker controller infrastructure, further payload deployment and hands-on-keyboard attacks, which is when threat actors stop using automated scripts and manually log in to an infected system to execute commands.
Update: For mac devices, the application bypassed Apple’s approval checks and was notarized, meaning it had been marked as safe by Apple and would not be blocked. The application uses libgffmpeg.dylib and attempts to connect to a command and control server. No more information on the specifics of the malcious content is known at current.
What’s the risk to me or my business?
According to 3CX, versions 18.12.407 & 18.12.416 are vulnerable to this attack and should be uninstalled. Organisations using the vulnerable versions of the 3CX desktop application are at a significant risk of data compromise.
Update: In an update to their advisory, for Mac users, the following versions are now confirmed as vulnerable: 18.11.1213, 18.12.402, 18.12.407 & 18.12.416.
Indicators of compromise (IoCs)
Crowdstrike has noted the following domains are in use by the attackers:
akamaicontainer.com
akamaitechcloudservices.com
azuredeploystore.com
azureonlinecloud.com
azureonlinestorage.com
dunamistrd.com
glcloudservice.com
journalide.org
msedgepackageinfo.com
msstorageazure.com
msstorageboxes.com
officeaddons.com
officestoragebox.com
pbxcloudeservices.com
pbxphonenetwork.com
pbxsources.com
qwepoi123098.com
sbmsa.wiki
sourceslabs.com
visualstudiofactory.com
zacharryblogs.com
What can I do?
A new desktop application is being worked on at current by 3CX, however it is not yet available. As such, it is recommended that the web application is used, and the vulnerable versions are uninstalled. Organisations should check for any activity involving the above IoCs. Additionally, organisations may benefit from identifying and monitoring the presence of ffmpeg.dll and d3dcompiler.dll on Windows devices as only a select number of anti-virus vendors have marked these as malicious.
Update: In addition to the above, Organisations may also benefit from identifying and monitoring the presence of libgffmpeg.dylib for Mac devices running vulnerable versions, as only a select number of anti-virus vendors have marked these as malicious. Due to the ongoing investigation, Black Arrow will update this post as soon as new information is identified.
The advisory from 3CX can be found here: https://www.3cx.com/blog/news/desktopapp-security-alert/
VirusTotal results for the ffmpeg.dll and d3dcompiler_47.dll can be found here: https://www.virustotal.com/gui/file/7986bbaee8940da11ce089383521ab420c443ab7b15ed42aed91fd31ce833896
https://www.virustotal.com/gui/file/11be1803e2e307b647a8a7e02d128335c448ff741bf06bf52b332e0bbf423b03
Various cyber security vendors have provided a breakdown of attacks, including indicators of compromise and actions they have taken:
https://news.sophos.com/en-us/2023/03/29/3cx-dll-sideloading-attack/
https://www.trendmicro.com/en_gb/research/23/c/information-on-attacks-involving-3cx-desktop-app.html
Need help understanding your gaps, or just want some advice? Get in touch with us.
#threatadvisory #threatintelligence #cybersecurity
Black Arrow Cyber Advisory 19/12/2022 – Veeam Vulnerabilities Under Active Exploitation
Black Arrow Cyber Advisory 19/12/2022 – Veeam Vulnerabilities Under Active Exploitation
Executive Summary
The US Cybersecurity and Infrastructure Security Agency (CISA) has added two vulnerabilities which impact Veeam Backup and Replication, to its ‘Known Exploited Catalog’, due to evidence of the vulnerabilities being actively exploited in the wild.
The two now-patched vulnerabilities (CVE-2022-26500 and CVE-2022-26501) were published 12th March 2022 by Veeam and allow an attacker to remotely execute malicious code without authentication. The impacted versions of Veeam Backup and Replication were 9.5, 10 and 11.
What’s the risk to me or my business?
If organisations are still using a version of Veeam Backup and Replication with these vulnerabilities, then there is the potential that an attacker could gain control over a system, impacting the confidentiality, integrity and availability of an organisations data.
What can I do?
Organisations using Veeam should contact their MSP to ensure that they have either installed the patches as per Veeam guidance or are using a newly deployed version of 10a or 11a that used installation files dated post 2nd March 2022.
Temporary mitigation would involve stopping and disabling the Veeam Distribution Service.
Further information on this vulnerability be found here: https://www.veeam.com/kb4288
The CISA Known ‘Exploited Vulnerabilities Catalog’ can be found here: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
Need help understanding your gaps, or just want some advice? Get in touch with us.
#threatadvisory #threatintelligence #cybersecurity
Black Arrow Cyber Advisory 10/08/2022 – Microsoft Patch Tuesday – Fix released for a Zero-Day flaw under active exploitation
Black Arrow Cyber Advisory 10/08/2022 – Microsoft Patch Tuesday – Fix released for a Zero-Day flaw under active exploitation
Executive Summary
Microsoft’s August Patch Tuesday provides updates to address security issues across its product range, including several critical patches. The standout patch in this release is for a Zero-Day flaw, affecting both client and server version of Windows, that is being actively exploited in the wild. This flaw is present within the Microsoft Windows Support Diagnostic Tool (MSDT), which is the same windows component that previously made headlines with the Follina zero day (CVE-2022-30190).
Security updates have also been released for other Microsoft products to tackle different issues, including privilege escalation flaws within Microsoft Exchange servers.
What’s the risk to me or my business?
Security updates are available for all supported versions of Windows. As some of these updates address vulnerabilities that are known to be actively exploited, the updates should be applied as soon as possible, particularly as this release contains a patch for an actively exploited Zero-day.
What can I do?
Apply the available updates from Microsoft as soon as possible, while taking into consideration any potential downtime that these updates may cause.
Technical Summary
The Zero-Day exploit, CVE-2022-34713, requires an end user to either open a crafted file sent as an email attachment, or through a link clicked on a website. This then in turn exploits the vulnerability within the Windows component, granting access to the malicious attacker to execute remote code on the victims computer. Microsoft reinforces the message that further awareness is required to upskill employees to be wary of these types of attacks, since malicious documents and links are a common attack vector which are still being used by attackers to great effect. Further information on this particular vulnerability is available here: CVE-2022-34713 - Security Update Guide - Microsoft - Microsoft Windows Support Diagnostic Tool (MSDT) Remote Code Execution Vulnerability
Further details on other specific updates within this Patch Tuesday can be found here: Microsoft Windows Security Updates August 2022 overview - gHacks Tech News
Need help understanding your gaps, or just want some advice? Get in touch with us.
Black Arrow Cyber Advisory 13/07/2022 – Microsoft Patch Tuesday – Fixes released for Two Zero-Day flaws, One Under Active Exploitation
Black Arrow Cyber Advisory 13/07/2022 – Microsoft Patch Tuesday – Fixes released for Two Zero-Day flaws, one under active exploitation
Executive Summary
Microsoft’s July Patch Tuesday provides updates to address security issues across its product range, including several critical patches. The standout patch in this release is for a Zero-Day flaw, affecting both client and server version of Windows, that is being actively exploited in the wild, and allows an attacker to escalate privileges within a specific Windows component to gain SYSTEM level permissions.
Security updates have also been released for other Microsoft products to tackle different issues, including the Microsoft Edge browser, which also has a Zero-Day patch, Microsoft Office, and all supported versions of Microsoft Windows.
What’s the risk to me or my business?
Security updates are available for all supported versions of Windows. As some of these updates address vulnerabilities that are known to be actively exploited, the updates should be applied as soon as possible, particularly as this release contains a patch for an actively exploited Zero-day.
What can I do?
Apply the available updates from Microsoft as soon as possible, while taking into consideration any potential downtime that these updates may cause.
Technical Summary
The aforementioned Zero-Day exploit, CVE-2022-22047, allows attackers to use privileged escalation within the Windows Client Server Runtime Subsystem (CSRSS) to gain SYSTEM permissions, effectively providing them with unlimited privileged access on a local system, allowing them to disable Endpoint Security Solutions, and allow for further privilege escalation through the installation of malicious software, allowing access to the wider organisational network. Further information on this particular vulnerability is available here: CVE-2022-22047 - Security Update Guide - Microsoft - Windows CSRSS Elevation of Privilege Vulnerability
Several vulnerabilities within the Edge browser have also been addressed, which also includes a Zero-Day flaw that Google had previously disclosed as been actively exploited in the wild earlier this month. This Zero-Day flaw has been marked as CVE-2022-2294, and further information is available here: Chrome Releases: Stable Channel Update for Desktop (googleblog.com)
Further details on other specific updates within this Patch Tuesday can be found here: Microsoft Windows Security Updates July 2022 overview - gHacks Tech News
Need help understanding your gaps, or just want some advice? Get in touch with us.
Black Arrow Cyber Advisory 13/04/2022 – Microsoft Patch Tuesday – patches released for various vulnerabilities
Black Arrow Cyber Advisory 13/04/2022 – Microsoft Patch Tuesday – patches released for various vulnerabilities
Executive Summary
As part of Microsoft’s Patch Tuesday, several high and critical vulnerabilities have been patched, of which at least four critical vulnerabilities affect all supported versions of Windows (Clients and Servers). These include ‘wormable’ vulnerabilities, meaning that the vulnerability can be exploited by a malicious program which can replicate itself across a network.
Security updates have also been released for other Microsoft products including Edge, Office and Active Directory Domain Services.
What’s the risk to me or my business?
Security updates are available for all supported versions of Windows, including Windows 7 to Windows 11, and Windows Server 2008 R2 to Windows Server 2022. As some of these updates address vulnerabilities that are known to be actively exploited, the updates should be applied as soon as possible.
What can I do?
Apply the available updates from Microsoft as soon as possible, while taking into consideration any potential downtime that these updates may cause.
Technical Summary
CVE-2022-24491 and CVE-2022-24497 relate to the previously mentioned ‘wormable’ vulnerability, which have CVSS scores of 9.8. They are Remote Code Execution vulnerabilities within the Windows Network File System (NFS). Further details on the individual updates and each affected Windows version can be found here: Microsoft Windows Security Updates April 2022 overview - gHacks Tech News
Need help understanding your gaps, or just want some advice? Get in touch with us.
Black Arrow Cyber Threat Briefing 05 February 2021
Black Arrow Cyber Threat Briefing 05 February 2021: Ransomware Gangs Made At Least $350 Million In 2020; Widening Security Shaped Gulf Between Firms And Remote Workers; 3.2 Billion Emails And Passwords Exposed; Account Takeover and Data Leakage Attacks Spiked In 2020; Automated Tools Increasingly Used to Launch Cyber Attacks; 93% Of Workers Overshare Online, Causing Social Engineering Risks;
Welcome to this week’s Black Arrow Cyber Threat Briefing – a weekly digest, collated and curated by our cyber experts to provide senior and middle management with an easy to digest round up of the most notable threats, vulnerabilities and cyber related news from the last week.
Photo by Corinne Kutz on Unsplash
Top Cyber Stories of the Last Week
Ransomware Gangs Made At Least $350 Million In 2020
Ransomware gangs made at least $350 million in ransom payments last year, in 2020, blockchain analysis. The figure was compiled by tracking transactions to blockchain addresses linked to ransomware attacks. Although Chainalysis possesses one of the most complete sets of data on cryptocurrency-related cybercrime, the company said its estimate was only a lower bound of the true total due.
https://www.zdnet.com/article/ransomware-gangs-made-at-least-350-million-in-2020/
Home Working Increases Cyber Security Fears
"We see tens of different hacking attacks every single week. It is never ending."A senior computer network manager says they are bombarded from all directions. "We see everything," he says. "Staff get emails sent to them pretending to be from the service desk, asking them to reset their log-in passwords. "We see workers being tricked into downloading viruses from hackers demanding ransoms, and we have even had employees sent WhatsApp messages pretending to be from the CEO, asking for money transfers.
https://www.bbc.co.uk/news/business-55824139
3.2 Billion Emails And Passwords Exposed Online
A whopping 3.2 billion password-username pairs are up for grabs in an unnamed online hacking forum. But don't panic — the data is nothing new. It's a compilation of stolen credentials from dozens of old data breaches, some going back ten years. That doesn't mean you shouldn't be aware that your old passwords are floating out there. Yes, your passwords, and ours too. Pretty much anyone who's ever created more than three online accounts has had a password compromised by now.
https://www.tomsguide.com/news/3-2-billion-passwords-leaked
Account Takeover Attacks Spiked In 2020
Occurring whenever a bad actor can steal login credentials and seize control of an online account, takeover attacks rose from 34% of fraud detected in 2019 to 54% by the end of December 2020. Other methods of fraud were blips on the radar compared to account takeovers: The next most popular method, at just 16% of detected fraud, was money laundering/mule transactions, followed by new account fraud (14%), and a mere 12% of instances used remote access or hacking tools to accomplish their goals.
https://www.techrepublic.com/article/account-takeover-attacks-spiked-in-2020-kaspersky-says/
30% Of “Solarwinds Hack” Victims Didn’t Actually Use Solarwinds
When security last week that it had been targeted by the same attacker that compromised SolarWinds' Orion software, it noted that the attack did not use SolarWinds itself. According to Malwarebytes, the attacker had used "another intrusion vector" to gain access to a limited subset of nearly a third of the organizations attacked had no direct connection to SolarWinds.
Data Leakage Attacks Saw Huge Rise In 2020
The number of data leakage incidents grew by an “unprecedented” rate in 2020, a new report from Imperva argues. Through online means alone, not counting leaks caused by lost hardware or word of mouth, Imperva researchers tracked a 93 percent rise. By the end of the year, Imperva had identified a total of 1.7 million leaks, with the the number growing even faster in the second half of the year. Between Q3 and Q4, there was a 47 percent increase.
https://www.itproportal.com/news/data-leakage-attacks-saw-huge-rise-in-2020/
Automated Tools Increasingly Used to Launch Cyber Attacks
Cyber-criminals are increasingly making use of automation and bots to launch attacks, according to a new analysis. revealed that over half (54%) of all cyber-attacks it blocked in November and December were web application attacks which involved the use of automated tools. The most prevalent form was fuzzing attacks, making up around one in five (19.5%). This uses automation to detect and exploit the points at which applications break. This was followed by injection attacks (12%), in which cyber-criminals make use of automation tools such as sqlmap to gain access to applications.
https://www.infosecurity-magazine.com/news/automated-tools-launch-cyber/
A Second SolarWinds Hack Deepens Third-Party Software Fears
It’s been more than two months since revelations that alleged Russia-backed hackers broke into the IT management firm SolarWinds and used that access to launch a massive software supply chain attack. It now appears that Russia was not alone; Reuters reports that suspected Chinese hackers independently exploited a different flaw in SolarWinds products last year at around the same time, apparently hitting the US Department of Agriculture's National Finance Center.
https://www.wired.com/story/solarwinds-hack-china-usda/
93% Of Workers Overshare Online, Causing Security Risks
Reveals just how much, and how often, people divulge about their lives online and how attackers take advantage of it. With insights from both professionals and hackers, the report explores how cybercriminals use an abundant and seemingly cheap resource — the personal information people share on social media and in out-of-office alerts — to craft social engineering attacks.
https://www.helpnetsecurity.com/2021/02/03/workers-overshare-online/
Is There A Widening Gulf Between You And Your Remote Workers? Yes – And It’s Security Shaped
It’s been almost a year since large parts of the workforce beat a hasty retreat from their offices, and began a mass experiment in working from home, often courtesy of Microsoft 365. And after 12 or so months, it’s safe to say that the case for productive remote working has been proved, and that many workers will continue to do so even when the all clear sounds. But is there a question as to whether remote working is as secure as the traditional, office bound, hard perimeter setup? Well, yes, and it’s fair to say the jury is still very much out.
https://www.theregister.com/2021/02/04/mind_the_security_gap_regcast/
Threats
Ransomware
Blockchain Analysis Shows Connections Between Four of 2020’s Biggest Ransomware Strains
2021's First Big Ransomware Gang Launches Sleek and Bigoted 'Leak' Site
Ransomware gangs now have industrial targets in their sights. That raises the stakes for everyone
Other Social Engineering
Malware
This malware abuses Tor and Telegram infrastructure to evade detection
Tiny Kobalos malware seen backdooring SSH tools, menacing supercomputers, an ISP, and more – ESET
Experts discovered a new Trickbot module used for lateral movement
Agent Tesla ramps up its game in bypassing security walls, attacks endpoint protection
Mobile
Vulnerabilities
Data Breaches
Security firm Stormshield discloses data breach, theft of source code
Female escort review site data breach affects 470,000 members
Nation-State Actors
As usual, contact us to help assess where your risks lie and to ensure you are doing all you can do to keep you and your business secure.
Look out for our weekly ‘Cyber Tip Tuesday’ video blog and on our YouTube channel.
You can also follow us on Facebook, Twitter and LinkedIn.
Links to articles are for interest and awareness and linking to or reposting external content does not endorse any service or product, likewise we are not responsible for the security of external links.
Black Arrow Cyber Threat Briefing 29 January 2021
Black Arrow Cyber Threat Briefing 29 January 2021: Phishing Attacks Show High-Ranking Execs ‘Most Valuable Asset’ and ‘Greatest Vulnerability’; Paying Ransomware Funding Organised Crime; Police take down botnet that hacked millions of computers; After SolarWinds Hack, Who Knows What Cyber Dangers We Face; Russian businesses warned of retaliatory cyber attacks; iOS vulns actively exploited; Top Cyber Attacks of 2020
Welcome to this week’s Black Arrow Cyber Threat Briefing – a weekly digest, collated and curated by our cyber experts to provide senior and middle management with an easy to digest round up of the most notable threats, vulnerabilities and cyber related news from the last week.
Top Cyber Headlines of the Week
Phishing Attacks Show High-Ranking Execs May Be ‘Most Valuable Asset,’ and ‘Greatest Vulnerability’
Cyber criminals have been using a phishing kit featuring fake Office 365 password alerts as a lure to target the credentials of chief executives, business owners and other high-level corporate leaders. The scheme highlights the role and responsibility upper management plays in ensuring the security of their own company’s assets.
Insurers 'Funding Organised Crime' by Paying Ransomware Claims
Insurers are inadvertently funding organised crime by paying out claims from companies who have paid ransoms to regain access to data and systems after a hacking attack, Britain’s former top cybersecurity official has warned.
Emotet: Police raids take down botnet that hacked 'millions of computers worldwide'
Emotet, one of the world's most dangerous cyber crime services, has been taken down following one of the largest ever internationally-coordinated actions against cyber criminals. Although it began as banking malware designed to steal financial credentials, Emotet had become an infrastructure tool leased out to cyber criminals to break into victim computer networks and install additional malicious software.
After the SolarWinds Hack, We Have No Idea What Cyber Dangers We Face
Months before insurgents breached the Capitol and rampaged through the halls of Congress, a stealthier invader was muscling its way into the computers of government officials, stealing documents, monitoring e-mails, and setting traps for future incursions. Last March, a hacking team, believed to be affiliated with Russian intelligence, planted malware in a routine software upgrade from a Texas-based I.T. company called SolarWinds, which provides network-management systems to more than three hundred thousand clients.
FSB warns Russian businesses of cyber attacks as retaliation for SolarWinds hack
Russian authorities are alerting Russian organizations of potential cyberattacks launched by the United States in response to SolarWinds attack. The Russian intelligence agency FSB has issued a security alert this week warning Russian organizations of potential cyberattacks launched by the United States in response to the SolarWinds supply chain attack.
Update your iPhone — Apple just disclosed hackers may have 'actively exploited' a vulnerability in its iOS
On Tuesday released a new iOS software update that includes fixes for three security weaknesses in the former version. Its support website that it is aware of the three security bugs and that they "may have been actively exploited. “Also, it does not disclose details regarding security issues "until an investigation has occurred."
Top Cyber Attacks of 2020
"Zoombomb" became the new photobomb—hackers would gain access to a private meeting or online class hosted on Zoom and shout profanities and racial slurs or flash pornographic images. Nation-state hacker groups mounted attacks against organisations involved in the coronavirus pandemic response, including the World Health Organization and Centres for Disease Control and Prevention, some in an attempt to politicize the pandemic.
https://thehackernews.com/2021/01/top-cyber-attacks-of-2020.html
Threats
Ransomware
Cyber Criminals use deceased staff accounts to spread Nemty ransomware
US and Bulgarian authorities disrupt NetWalker ransomware operation
Former UK Cyber Security Chief Says Laws Are Needed to Stop Ransomware Payouts
BEC
Phishing
Other Social Engineering
Malware
DreamBus botnet targets enterprise apps running on Linux servers
Trickbot is back again - with fresh phishing and malware attacks
Mobile
Vulnerabilities
Heap-based buffer overflow in Linux Sudo allows local users to gain root privileges
Vulnerability found in top messaging apps let hackers eavesdrop
Experts Detail A Recent Remotely Exploitable Windows Vulnerability
Former LulzSec Hacker Releases VPN Exploit Used to Hack Hacking Team
KindleDrip exploit – Hacking a Kindle device with a simple email
Data Breaches
Charities
Insider Threats
Nation-State Actors
Denial of Service
Privacy
Reports Published in the Last Week
As usual, contact us to help assess where your risks lie and to ensure you are doing all you can do to keep you and your business secure.
Look out for our weekly ‘Cyber Tip Tuesday’ video blog and on our YouTube channel.
You can also follow us on Facebook, Twitter and LinkedIn.
Links to articles are for interest and awareness and linking to or reposting external content does not endorse any service or product, likewise we are not responsible for the security of external links.