The e Harmony data was being offered for sale by a user identified as "Provider" at prices ranging from ,000 to ,000, Krebs said.
The hacker also reportedly approached e Harmony with an offer to sell his security services to the site to fix the flaw--an offer the dating site said it declined.
But if I had to pick just one that makes a lot of difference, it's adaptability.
People that are rigid and not adaptable are much harder to match them." The stakes are high for e Harmony, with an estimated 109 million Americans being single and the effort to match them up becoming an even bigger business than ever.
" Despite evolving the company, he insisted he's not changing "what we're doing or the mission of the company.
We're always about trying to find you your last first date." A recent e Harmony poll found the most important attribute men and women cite is "sense of humor," followed by "kindness…charisma" and "intrigue." Langston says it's more than that.
Krebs said an Argentinian hacker told him late last year that he'd discovered a vulnerability in the online dating site that allowed him to view customer passwords.
Krebs said that a week later, he discovered a listing for e Harmony user names and passwords on Carder.biz, an online marketplace for hacked data and accounts, botnet hosting, and stolen credit card and consumer data.
Singles can also ask Alexa to find out who has viewed their profile, select favourites and send smiles. We’re confident that with Alexa on board we can increase confidence and create a deeper sense of intimacy for those using our service.
The dating service's main site uses separate databases and Web servers, and "at no point during this attack did the hacker successfully get inside our e Harmony network," the company said in a blog post.
e Harmony said it had repaired the vulnerability and was notifying customers who may have been affected.
The 16 year old company still uses an extensive questionnaire with 150 questions designed to match single men and women for long-term compatibility. Neil Clark Warren is still seen in television commercials explaining how the site helps connect adults interested in marriage.
"We find great relationships for reasons that matter," new e Harmony CEO Grant Langston told CNBC's "On the Money" in an interview.