eHarmony said Wednesday that the passwords of a "small fraction" of its users had been compromised. The site, which says it has over 20 million registered users, did not say how many had been affected. However, tech news site Ars Technica said it found about 1.5 million passwords leaked online that appeared to be from eHarmony users.
The dating service said on its blog that it had reset the passwords of the affected users, who would receive an email with directions on setting new passwords. It suggested that all users should choose strong passwords.
Earlier on the same day, business social network LinkedIn confirmed that some of its users' passwords had been stolen and leaked online. It did not say how many of the more than six million passwords that were distributed online corresponded to LinkedIn accounts.
LinkedIn Corp. said in a blog post that the company is continuing to investigate.
LinkedIn has a lot of information on its more than 160 million members, including potentially confidential information related to jobs being sought. Companies, recruiting services and others have accounts alongside individuals who post resumes and other professional information.
The Associated Press contributed to this report.