"There are many reasons why people would want to protect their identities online - whether or not you agree with the premise of this particular service, users have placed their trust in Ashley Madison and have been badly let down. What is most worrying is that this points to a wider trend of anonymous apps and websites being hacked, including Secret in August 2014.
"The scale of this hack is what will trouble the UK's 1.2 million users the most. With reports that Ashley Madison's customers have had everything from their credit card details to their real names and even their sexual fantasies compromised, there may be a lot of red faces in the UK this morning and much damage has likely already likely been done."
The company sent the following statement: "Following the earlier unprovoked and criminal intrusion into our system, Avid Life Media immediately engaged one of the world's top IT security teams to take every possible step toward mitigating the attack.
"Using the Digital Millennium Copyright Act (DMCA), our team has now successfully removed the all posts related to this incident as well as all Personally Identifiable Information (PII) about our users published online. We have always had the confidentiality of our customers' information foremost in our minds and are pleased that the provisions included in the DMCA have been effective in addressing this matter.
"Our team of forensics experts and security professionals, in addition to law enforcement, are continuing to investigate this incident and we will continue to provide updates as they become available."
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