Skip to content
NewA calmer, faster ZeroHour

Anthropic-themed phishing emails bypass secure email gateways

Original title: Anthropic-Themed Phishing Emails Bypass Top Security Tools

Dark Readingby Nate Nelson ()8 min read
Part of a story covered by 2 sourcesFake Anthropic previews phish Google and Microsoft credentialsMerged summary & timeline
AI summary · x-ai/grok-4.7Summaries by Vani AI

Since September, an unnamed actor has used fake Anthropic previews to steal Google and Microsoft credentials.

Cofense describes a global phishing campaign in which emails offer early access to a supposed private Anthropic AI tool. The messages contain typos, come from a GoTo Webinar domain, and lead to a fake Zoom page offering Google or Microsoft single sign-on. Cofense says obvious lures are still passing some leading secure email gateways. Google sign-in on the fake page does not prompt for a password.

Unconfirmed: The actor is unidentified, and gateway bypass is Cofense's assessment of this campaign.

Key facts
  • The lure is an invitation-only preview of a "new social media AI tool."
  • The sender name is misspelled as "Austin from nthropic."
  • Shortened URLs, CAPTCHAs, and legitimate conferencing tools are used.
  • The registration link does not point to Anthropic or a conferencing domain.
Security assessment · AI, from the article

Impact: Theft of Google and Microsoft account credentials

What to do
  1. 1.Treat Anthropic early-access mail from a GoTo Webinar domain as phishing.
  2. 2.Do not complete Google or Microsoft SSO on the linked fake Zoom page.
Analyze this story with Vani AIImpact, who is affected and what defenders should do, in a new chat

Indicators of compromise

auto-extracted · verify before use · export allAll
TypeIndicatorContext
domaingotowebinar.comails are sent from a legitimate email address, customercare@gotowebinar[.]com — a shared sender address that any GoTo Webinar user migh
md5058ef0cfb57652bddd698609c655b901storm-backdoor-attacks#recipe=similar-items&sourcecontentid=058ef0cfb57652bddd698609c655b901) CISA Warns of 'Ongoing' Brickstorm Backdoor Attacks by Ro
md5142a2e80d6a5fef7c9df2e421245edcbing-fortune-500-brands#recipe=similar-items&sourcecontentid=142a2e80d6a5fef7c9df2e421245edcb) Operation DoppelBrand: Weaponizing Fortune 500 Brands by
md54056475ddaadba32176031a32b0b2af4omers-hacked-gainsight#recipe=similar-items&sourcecontentid=4056475ddaadba32176031a32b0b2af4) Deja Vu: Salesforce Customers Hacked Again, Via Gainsight
md5772e2b458963b1a9ec224771cac5b591-orgs-high-end-malware#recipe=similar-items&sourcecontentid=772e2b458963b1a9ec224771cac5b591) Chinese APTs Hacking Asian Orgs With High-End Malware by

From the original article

8 min read at darkreading.com

Obvious phishing emails with numerous red flags are somehow getting past some of the industry-leading secure email gateway (SEG) products.

Dark Reading

By Nate Nelson · darkreading.com

Read the full article at Dark Reading

A short excerpt; the article and its images belong to the publisher. Summary, key facts and assessment above are AI-written from the article and can be wrong.