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A now patched security vulnerability in Zimbra Collaboration was exploited as a zero-day earlier this year in cyber attacks targeting the Brazilian military
Even after their zero-day vulnerability turned into an n-day, attackers known as Marbled Dust or Sea Turtle continued to spy on military targets that had failed to patch Output Messenger.
TA422 Is Targeting Organizations in Europe and North America, Proofpoint SaysA Russian military hacking intelligence group is winning the race to exploit known vulnerabilities before system administrators can apply patches, warns Proofpoint. The firm has seen a spike in activity from TA422, also known as APT28, Fancy Bear and Forest Blizzard.
Microsoft has patched an Outlook zero-day vulnerability (CVE-2023-23397) exploited by a hacking group linked to Russia's military intelligence service GRU to target European organizations. [...]