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The Week in Ransomware - September 3rd 2021 - Targeting Exchange

Over the past two weeks, it has been busy with ransomware news ranging from a gang shutting down and releasing a master decryption key to threat actors turning to Microsoft Exchange exploits to breach networks. [...]

https://www.bleepingcomputer.com/news/security/the-week-in-ransomware-september-3rd-2021-targeting-exchange/
Watch out for new malware campaign”s 'Windows 11 Alpha' attachment

Relying on a simple recipe that has proved successful time and time again, threat actors have deployed a malware campaign recently that used a Windows 11 theme to lure recipients into activating malicious code placed inside Microsoft Word documents. [...]

https://www.bleepingcomputer.com/news/security/watch-out-for-new-malware-campaign-s-windows-11-alpha-attachment/
Google's TensorFlow drops YAML support due to code execution flaw

TensorFlow, a popular Python-based machine learning and artificial intelligence project developed by Google has dropped support for YAML, to patch a critical code execution vulnerability. YAML is a convenient choice among developers looking for a human-readable data serialization language. [...]

https://www.bleepingcomputer.com/news/security/googles-tensorflow-drops-yaml-support-due-to-code-execution-flaw/
Ransomware gangs target companies using these criteria

Ransomware gangs increasingly purchase access to a victim's network on dark web marketplaces and from other threat actors. Analyzing their want ads makes it possible to get an inside look at the types of companies ransomware operations are targeting for attacks. [...]

https://www.bleepingcomputer.com/news/security/ransomware-gangs-target-companies-using-these-criteria/
Ransomware gang threatens to leak data if victim contacts FBI, police

The Ragnar Locker ransomware group is warning that they will leak stolen data from victims that contact law enforcement authorities, like the FBI. Ragnar Locker has previously hit prominent companies with ransomware attacks, demanding millions of dollars in ransom payments. [...]

https://www.bleepingcomputer.com/news/security/ransomware-gang-threatens-to-leak-data-if-victim-contacts-fbi-police/
REvil ransomware's servers mysteriously come back online

The dark web servers for the REvil ransomware operation have suddenly turned back on after an almost two-month absence. It is unclear if this marks their ransomware gang's return or the servers being turned on by law enforcement. [...]

https://www.bleepingcomputer.com/news/security/revil-ransomwares-servers-mysteriously-come-back-online/
Zoho patches actively exploited critical ADSelfService Plus bug

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) is warning that hackers are exploiting a critical vulnerability in Zoho's ManageEngine ADSelfService Plus password management solution that allows them to take control of the system. [...]

https://www.bleepingcomputer.com/news/security/zoho-patches-actively-exploited-critical-adselfservice-plus-bug/