What’s actually slowing this PC down?
Pick the symptom - the matching free tool is one click away.
A breach involving a third-party system exposed some KeyBank customers’ personal and account information, but the filed customer notice says online banking credentials were not compromised. The Maine Attorney General’s filing dates the incident to December 13–14, 2024, and reports 1,227 people affected overall; that is the filing’s figure, not an independently verified national total.
What happened in the KeyBank breach?
The Maine Attorney General lists KeyBank N.A. as the reporting organization and classifies the event as an external-system breach, or hacking. The filing says the incident occurred on December 13 and 14, 2024, was discovered on December 14, and that consumers were notified on February 11, 2025. It reports 1,227 people affected overall, including 13 Maine residents. Those counts come from the Maine filing and do not establish a separately verified nationwide total. Maine Attorney General breach-notice listing.
The filed notice describes the incident as involving a third-party provider’s system. The reviewed records do not name that provider or explain how the attackers gained access. KeyCorp’s later annual report discusses third-party and downstream-provider risks generally, including breaches at third parties experienced by financial institutions, but does not identify the provider in this incident. KeyCorp annual report.
What customer information was involved?
The filed consumer notice identifies these data elements:
Windows Errors? Fix Them Before They Spread
Repair common Windows errors and clear accumulated junk for a smoother, more stable PC - no reinstall needed.Free scan · no reinstallOutdated Drivers Are Slowing You Down
One free scan finds every outdated or missing driver and matches the right update for your exact hardware.Free scan · exact hardware match#1 Best Overall
- Name
- Address
- Account number
- Account balance
The same notice expressly says online banking credentials were not compromised. That statement addresses credentials; it should not be read as a claim that every KeyBank system or all other kinds of information were unaffected. The reviewed notice does not establish that passwords were stolen. Filed consumer notice.
Does this mean a KeyBank account was hacked?
Not according to the available notice. It describes unauthorized access to an external provider’s system and says online banking credentials were not compromised. That is different from evidence that someone obtained a customer’s login password or accessed the customer’s online banking account. The notice does not provide enough detail to determine whether any individual account was separately targeted or accessed.
If you received a breach letter, use the contact information in that letter or KeyBank’s current official support channels to ask whether your information was included and what steps apply to your account. Do not use links or phone numbers in an unexpected message unless you have verified them independently.
What should affected customers do?
Use the monitoring offer described in your own notice
The Maine filing records an offer of 24 months of Equifax Complete Premier credit monitoring and identity-theft and restoration services. Enrollment eligibility, activation instructions, and expiry dates depend on the recipient’s own notification. Because this was a 2025 notice, do not assume that activation details in a sample letter remain usable; check the notice you received or contact KeyBank through an official channel. Maine Attorney General filing.
Review account activity and statements
Check your account transactions and statements for activity you do not recognize. Contact KeyBank promptly using a verified number if you see a suspicious transaction or have concerns about your account. Continue ordinary account-security practices, but the notice does not say that affected customers need to reset online banking credentials because of this incident.
Watch for misuse of exposed details
A name, address, account number, and balance can be useful to someone attempting convincing impersonation or fraud even when login credentials were not exposed. Be cautious with unexpected calls, texts, and emails claiming to be from KeyBank or a monitoring service. Verify requests through a channel you locate independently, and do not disclose a one-time passcode or password in response to an unsolicited contact.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Who is responsible for notifying customers?
Federal interagency guidance says the financial institution remains responsible for notifying customers and its regulator about a service-provider incident, although it may authorize the provider to send notices on its behalf. The guidance also recommends assessing the incident’s scope and the information accessed, containing the event, and notifying the primary federal regulator when sensitive customer information has been accessed. Federal interagency guidance on third-party relationships.
The SEC’s 2024 Regulation S-P amendments separately require incident-response programs and notice within 30 days for covered securities-sector entities, including broker-dealers, investment companies, registered investment advisers, funding portals, and transfer agents. The SEC release does not establish that this rule governed the KeyBank incident, so it should not be treated as the specific legal basis for the notice. SEC release on Regulation S-P amendments.
Recommended Free Tools
Quick Recap
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
