Love lives and reputations may be at risk after the release of customer data from infidelity website Ashley Madison on Tuesday, a dramatic move likely to rattle users' attitude toward the Internet.

Hackers dumped a big cache of data containing millions of email addresses for U.S. government officials, U.K. civil servants and high-level executives at European and North America corporations late on Tuesday, the latest cyberattack to raise concerns about Internet security and data protection. In Japan alone, it is believed the site had 1.8 million members as of May.

Identifying members of a marital cheating website appeared aimed at maximum damage to the individuals, causing public embarrassment and potentially hurting relationships, rather than financial gain.