APT Groups BITTER and ArcaneDoor Target Enterprises with Cyber Attacks

APT Groups BITTER and ArcaneDoor Target Enterprises with Cyber Attacks

First seen 31 Dec 2025, 15:27 UTC •Securityboulevard •98% similarity •34.9

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In November 2025, the Indian APT group BITTER launched a cyber attack targeting enterprises and carriers. Earlier, in September 2025, the APT group ArcaneDoor exploited a zero-day vulnerability in the Cisco Adaptive Firewall to conduct attacks, highlighting ongoing threats from advanced persistent threats (APTs).

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