Late last night / early this morning, Fly & Dine and Doctor of Credit as well as many people on Twitter have reported what could be a major security breach at Chase: people report logging into their Chase accounts only to be taken to a stranger’s account, where they can view all of the sensitive info stored within one’s bank login — credit card history, address, phone number, etc. At this point, Chase has not released any information, but Doctor of Credit suggests that logging in right now might be a trigger.
Right now, we know little beyond what is being reported by individual people (see the Doctor of Credit post linked above for many Twitter screen shots of reports), but I personally intend to check on my accounts by calling the number on the back of my cards and checking balances through the automated system rather than logging in through the website or app in the short term. Hopefully, there will be more information to come.