Rumors began flying that Sears was breached by the same sort of attack that hit Target. Experts say there is a good chance the identification of Sears as a victim is a false alarm caused by a common weaknesses in banks anti-fraud systems that becomes apparent mainly in the wake of massive breaches like the one at Target late last year. The problem of false positives often come from small institutions that may not have a broader perspective on how far a breach like Target can overlap with purchasing patterns at similar retailers.”]
Source: https://krebsonsecurity.com/2014/02/breach-rumor-mill-puts-retailers-on-defensive/