The bank's Web site was the victim of a cyberattack yesterday, though the company says its physical branches and ATMs weren't affected.
The massive wave of DDoS attacks that hit U.S. banks recently was thought to have been done by a fringe hacker group, however government officials now believe it was the work of Iran.
The company hasn't said exactly what kind of issues it's seeing, and there has been no disruption or denial-of-service attacks.
As several banks experience outages, one group claims responsibility, saying it's retaliating for the anti-Islam movie and will continue its onslaught until the film is taken off the Web.
Warning posted to Pastebin promises attack on Bank of America because of controversial anti-Islam movie, but there's no evidence the problems with the bank sites are related.