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UNC6671

UNC6671 (aka Cordial Spider, BlackFile) is a cybercriminal group running data-theft extortion campaigns under multiple brand names via phishing and vishing.

Known aliases

  • BlackFile
  • Cordial Spider
  • O-UNC-045
  • PREY-0058

Current stories

securityConfirmed3 publishers

Storm-3121 callers demand an urgent passkey update to harvest Microsoft 365 session tokens

Microsoft has tracked passkey- and SSO-themed help desk impersonation since May 2026, with the calls steering employees into adversary-in-the-middle proxies and device-code grants that hand over live Microsoft 365 sessions.

Perspective Coverage

3 publishers
Builder
Builder 25%
Operator
Operator 63%
Investor
Investor 12%

Reality

Evidence72
Adoption
Not scored
Hype gap+10
Incentives35
Confidence70
securityConfirmed3 publishers

The extortion layer your IR playbook has no page for: 'Ransom Busters' emails victims mid-incident

GuidePoint says the persona offering to delete stolen data for $20,000 to $60,000 is very likely a ransomware affiliate, which makes the rescue fee a second payment to the same attacker.

Publishers:bleepingcomputer.com guidepointsecurity.com thehackernews.com

Perspective Coverage

3 publishers
Builder
Builder 23%
Operator
Operator 65%
Investor
Investor 12%

Reality

Evidence66
Adoption18
Hype gap+12
Incentives40
Confidence62
securityConfirmed3 publishers

PREY-0058 phones executives to harvest Microsoft 365 session tokens

Arctic Wolf says the cluster it tracks as PREY-0058 deploys no malware at all. A call from fake IT leads to a proxied login page, and the stolen session token comes back from inside the victim's own ASN.

Perspective Coverage

3 publishers
Builder
Builder 17%
Operator
Operator 75%
Investor
Investor 8%

Reality

Evidence62
Adoption
Not scored
Hype gap+15
Incentives
Not scored
Confidence60
productOne report1 publisher

Apollo's breach letter dates its own delay: four days in, 46 days out

The private equity firm's 21 August notice puts cloud access at 6 to 10 July and the scope finding at 12 August. The interval nobody puts on a dashboard sits in between.

Publishers:thenextweb.com

Reality

Evidence68
Adoption44
Hype gap−8
Incentives66
Confidence61
leadershipOne report1 publisher

The extortion call now comes from your help desk, and the fix is a procedure you own

Google says the BlackFile crew has targeted dozens of organisations by phoning staff and posing as internal IT. No vendor bug is involved, which puts the remedy on IT leadership.

Publishers:cloud.google.com

Reality

Evidence70
Adoption42
Hype gap+8
Incentives62
Confidence58
leadershipOne report1 publisher

UNC6671 did not retire: four brands, one helpdesk script, and calls to personal phones

Google Threat Intelligence Group says the crew behind BlackFile spread into Redact, Pink, Helix and Falcon while keeping the same vishing route into Microsoft 365 and Okta.

Publishers:cloud.google.com

Reality

Evidence60
Adoption45
Hype gap+8
Incentives62
Confidence55