#oyster-backdoor

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#seo-poisoning #malvertising #fake-installers #vanilla-tempest #rhysida-ransomware #code-signing-abuse
Information security
fromForbes
3 days ago

Do Not Install These Microsoft Teams Or Google Meet Updates

Oyster backdoor is distributed via fake meeting app installers and SEO-poisoned search results, enabling persistent remote access and likely remaining active through 2026.
Information security
fromThe Hacker News
1 month ago

Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign

Microsoft revoked over 200 certificates used by Vanilla Tempest to sign fake Teams installers delivering the Oyster backdoor and Rhysida ransomware.
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