Frost Bank
About the organisation
[AI generated] Frost Bank is a Texas-based financial institution and a subsidiary of Cullen/Frost Bankers, Inc. Founded in 1868 and headquartered in San Antonio, it operates across major Texas cities offering personal and commercial banking, wealth management, insurance, and investment services. As one of the largest independent banks in Texas, it serves individuals, businesses, and institutions within the United States financial services industry.
What the listing means
Frost Bank appeared on the everest leak site on 20 April 2026. Groups publish a victim once negotiations stall or as pressure during them, so a listing usually means data was already exfiltrated β the attack itself is dated 16 April 2026, 4 days before the listing. This group has not published new claims in the last 30 days.
Recommended actions
- Treat any unsolicited message referencing Frost Bank as suspicious β leaked data gets weaponised for phishing within days.
- If you hold an account on frostbank.com, change that password now, update it anywhere you reused it, and enable two-factor authentication.
- Other Financial Services organisations should review this group's known TTPs and validate detection coverage against them.
- Watch for follow-on extortion: stolen data is often re-leaked or resold after the initial listing.
- A leak-site listing is a claim made by the attacker, not a confirmed breach β check the organisation's own disclosures before acting on it.
Leak-site evidence
Listing URL https://www.ransomware.live/id/RnJvc3QgQmFua0BldmVyZXN0
Show leak-site screenshot
Captured from the group's extortion site. It may contain the victim's data or the attacker's messaging.
