cyber espionage
How Chinese hackers got their hands on Microsoft’s token signing key
The mystery of how Chinese hackers managed to steal a crucial signing key that allowed them to breach Microsoft 365’s email service and access accounts of employees of 25 …
Trojanized Signal, Telegram apps found on Google Play, Samsung Galaxy Store
ESET researchers have identified two active campaigns targeting Android users, where the threat actors behind the tools for Telegram and Signal are attributed to the …
North Korean hackers breached Russian missile development firm
North Korean state-sponsored hackers have breached Russian missile maker NPO Mashinostroyeniya, according to SentinelLabs researchers. North Korean hackers discovered The …
Microsoft Exchange servers compromised by Turla APT
Turla has been targeting defense sector organizations in Ukraine and Eastern Europe with DeliveryCheck and Kazuar backdoors / infostealers and has been using compromised …
Chinese hackers forged authentication tokens to breach government emails
Sophisticated hackers have accessed email accounts of organizations and government agencies via authentication tokens they forged by using an acquired Microsoft account (MSA) …
Microsoft patches four exploited zero-days, but lags with fixes for a fifth (CVE-2023-36884)
For July 2023 Patch Tuesday, Microsoft has delivered 130 patches; among them are four for vulnerabilites actively exploited by attackers, but no patch for CVE-2023-36884, an …
Turla’s Snake malware network disrupted by Five Eyes’ authorities
The US Justice Department announced the completion of court-authorized operation MEDUSA, to disrupt a global peer-to-peer network of computers compromised by sophisticated …
Researchers outline the Lazarus APT offensive toolset
ESET researchers uncovered and analyzed a set of malicious tools that were used by the Lazarus APT group in attacks during the end of 2021. The campaign started with spear …
Attackers use novel technique, malware to compromise hypervisors and virtual machines
Unknown attackers wielding novel specialized malware have managed to compromise VMware ESXi hypervisors and guest Linux and Windows virtual machines, Mandiant threat analysts …
Attackers still exploit Log4Shell on VMware Horizon servers, CISA warns
If your organization is running VMware Horizon and Unified Access Gateway servers and you haven’t implemented the patches or workarounds to fix/mitigate the Log4Shell …
Stealthy APT group plunders very specific corporate email accounts
An eminently sophisticated and stealthy APT group is going after specific corporate email accounts and has, on occasion, managed to remain undetected in victim environments …
New cyberespionage campaign targeting ISPs, research entities
ESET Research discovered a still-ongoing cyberespionage campaign using a previously undocumented Korplug variant by the Mustang Panda APT group. The current campaign exploits …
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