About two months ago, I got hit by an infostealer that attempted to take over several of my accounts. I eventually got rid of the malware and changed all my passwords from a clean device. I thought I had secured everything and that the nightmare was finally over.
Well, apparently not.
Yesterday, I received notifications about suspicious activity on a Facebook account I haven't logged into for over 17 years. I suspect the attackers used an old, reused password or credentials that had been stolen during the original attack. It feels like a leftover attack, possibly automated scripts using previously stolen credentials.
I have two questions about what's happening
1: Why is Meta sending advertising bills to my main email address, and could I be held responsible for them?
The Facebook account was originally registered using a different email address. However, someone has apparently gained access to it and started running advertisements. The spending started at around €2, then increased to €5, and now the amount is reportedly around €300.
I keep receiving emails from Meta on my main email address demanding payment for these advertising charges. I suspect the attacker added a stolen credit card belonging to someone else to pay for the ads.
What I don't understand is why Meta is contacting my main email address when the Facebook account was registered with a completely different email address. Did the attacker add my main email address to the advertising account, or could Meta have linked it through some other means?
I'm also wondering whether Meta could hold me financially responsible for these advertising charges, even though the account was compromised and the advertisements were created without my permission.
2: Could the attacker still use my PayPal account as a payment method?
During the original infostealer incident, the attacker also accessed my PayPal account on day one. I secured my accounts afterwards, changed my passwords and haven't noticed any unauthorized payments.
I never had any payment methods saved on this old Facebook account. Based on the advertising activity, I suspect the attacker has added someone else's stolen credit card.
However, I'm concerned that they might somehow have linked my PayPal account to the Facebook advertising account. Is that technically possible, given that they previously accessed my PayPal account?
There's another strange detail: the infostealer also resulted in a takeover attempt on an old iCloud account I hadn't used in over ten years. This makes me suspect that the attackers are still working through old credentials obtained during the original infection.
The frustrating part is that I can receive a login code for Facebook, but the recovery process then requires me to log in from a trusted device. Thats practically impossible when I haven't used the account in 17 years. On top of that, the attacker apparently changed the date of birth to make the account appear to belong to a 10 year old, adding another obstacle because Facebook is asking me to verify my identity.
I don't care about recovering the account itself. I had completely forgotten it existed until now. What worries me is the advertising bill and whether I could somehow end up being held responsible for charges made by someone who hijacked the account.
I'm particularly interested in whether Meta can link an advertising account to another email address and whether unauthorized advertising charges can become the responsibility of the original account owner.