The scale of yesterday’s reported phishing attack on Hotmail users is much wider than previously thought.
Originally, 10,000 Hotmail accounts were reported to have had their login details published on pastebin.com. As the user names began with A or B it was reasonable to assume that over 100,000 Hotmail accounts on a full list may have been compromised; the 10,000 published may have been a taster for those criminal elements who purchase such information.
Today, the UK media are claiming to have seen a bigger, 20,000 name list, which in itself is not surprising considering the calculation we did yesterday that suggested the overall number of vulnerable Hotmail accounts was in six figures. However, the shocking news about the bigger list is that it includes service providers other than just Hotmail.
Yesterday, Microsoft said it was an industry-wide problem and they have been proved correct today with the new list including details of Gmail, Yahoo, AOL, Earthlink and Comcast accounts. This potentially puts millions of email accounts at risk and, of course, all the confidential and personal information that routinely passes through these accounts in legitimate emails may be read by dishonest third parties.
Microsoft said, “Our guidance to customers is to exercise extreme caution when opening unsolicited attachments and links from both known and unknown sources, and that they install and regularly update their anti-virus software.”
Once again we would advise users of any of the affected email providers to change their passwords now – and also to change their password on any other site that uses the same password. Phishers know that up to 40% of people use the same password on every website they visit.
We will be publishing some advice on how to avoid falling into the phishing trap later today