An anonymous reader quotes Ars Technica:
Equifax isn't the only credit-reporting behemoth with a website redirecting visitors to fake Adobe Flash updates. A security researcher from AV provider Malwarebytes said transunioncentroamerica.com, a TransUnion site serving people in Central America, [was] also sending visitors to the fraudulent updates and other types of malicious pages... Malwarebytes security researcher Jerome Segura says he was able to repeatedly reproduce a similar chain of fraudulent redirects when he pointed his browser to the transunioncentroamerica.com site. On some occasions, the final link in the chain would push a fake Flash update. In other cases, it delivered an exploit kit that tried to infect computers with unpatched browsers or browser plugins... "This is not something users want to have," Segura told Ars...
Equifax on Thursday was quick to say that its systems were never compromised in the attacks. TransUnion said much the same thing. This is an important distinction in some respects because it means that the redirections weren't the result of attackers having access to restricted parts of either company's networks. At the same time, the incidents show that visitors to both sites remain much more vulnerable to malicious content than they should be.
Both sites hosted fireclick.js, an old script from a small web analytics company which pulls pages from sites like Akamai, SiteStats.info, and Ostats.net. "It appears that attackers have compromised the third-party library," writes BankInfoSecurity, adding that Malwarebytes estimates over a 1,000 more sites are using the same library