Advertisers Targeted: advertisefacebook.com Leak Exposed 223 Logins

A Small but Targeted Leak Hits advertisefacebook.com Users

In March 2026, HEROIC analysts found a stealer log labeled "advertisefacebook.com" being shared on Telegram. The file is small by breach standards, just 223 records, but every one includes an email address, a plaintext password, and the URL the credential was used on. HEROIC's records list the exposed accounts under the United States.

Why This Is Dangerous Even at a Small Scale

Size does not determine risk here. These 223 accounts appear to belong to people managing Facebook advertising, accounts that often connect directly to ad spending budgets, payment methods, and business pages. A stolen login tied to an ad management tool can let an attacker launch fraudulent ad campaigns on someone else's dime or hijack a business's advertising presence outright.

What Was Exposed in the advertisefacebook.com Dump

• Email addresses used to access advertisefacebook.com
• Plaintext passwords with no hashing or encryption applied
• URLs showing exactly where each credential was entered

Why This Matters for Advertisers and Small Business Owners

Anyone running paid Facebook ad campaigns tends to reuse the same login across several marketing tools, which makes this exact kind of leak dangerous even at 223 records. If an attacker gets into an ad account, they can redirect budgets, launch scam campaigns under a legitimate business's name, or pivot into other connected accounts through password reuse, turning a small leak into a much larger financial hit.

How This Stealer Log Was Likely Collected

Stealer malware works quietly in the background of an infected computer, pulling saved passwords straight out of the browser along with the web address each one belongs to. Whoever ran this particular infection packaged out logins tied specifically to advertisefacebook.com, then shared the resulting file on Telegram roughly four months after the credentials were first captured.

Check If Your Advertising Account Is Affected

If you manage Facebook ad accounts or use similar marketing tools, it is worth checking whether your email shows up in this or any other leak. HEROIC's free breach scanner searches more than 400 billion exposed records in seconds, letting you confirm your exposure and change any reused passwords before someone else uses them first.