Could Hotmail password theft be due to a trojan?

A researcher says there is evidence that not all of the Gmail and Hotmail account passwords were taken as a result of phishing.

A security researcher has claimed that some of the passwords stolen from Hotmail, Gmail and other webmail services were the result of a data theft trojan rather than a phishing attack.

Originally 10,000 Hotmail passwords were leaked onto the pastebin website, posted by an anonymous user. Later on, Google confirmed Gmail had been targeted as well.

Although Microsoft and Google have both said that the passwords were taken as a result of phishing, ScanSafe security researcher Mary Landesman said there was no way that the companies could have been totally sure of this.

Speaking to IT PRO she said: "No offence to, and I don't mean to undermine either Microsoft and Google, but certainly neither one of them can actually definitively either."

"I think they came out with phishing as the most likely explanation in their minds without having really gone over the lists in great detail," she added.

Landesman said that there were a lot of indicators in the password lists that are consistent with data theft rather than phishing.

"It doesn't mean that 100 per cent of the list was derived from either source [phishing or trojan], more likely a combination of sources," she said.

The researcher said that one tell-tale sign of a possible trojan was that 1,369 of the account records appeared more than once and as some as many as five times.

"Phishing scams do not typically vet the usernames and passwords when they receive them," she said.

"The fact that there actually seems to be failed login attempts is much more indicative of a keylogger or some sort of trojan capture."

She also said on her blog post that previous lists of known phished accounts generally saw some victims left nonsensical messages as they realised that they were being phished, but this list had no such entries.

She said that although '123456' did appear in the list as a password, it still only appeared 63 times out of the 10,000 records, and by and large most of the users had respectable passwords, so were potentially less likely to fall for a phishing scam.

Microsoft and Google had not responded to our request for comment on Landesman's remarks at the time of publication.

Featured Resources

Digital document processes in 2020: A spotlight on Western Europe

The shift from best practice to business necessity

Download now

Four security considerations for cloud migration

The good, the bad, and the ugly of cloud computing

Download now

VR leads the way in manufacturing

How VR is digitally transforming our world

Download now

Deeper than digital

Top-performing modern enterprises show why more perfect software is fundamental to success

Download now

Recommended

What is a Trojan?
Security

What is a Trojan?

14 Oct 2020
Hotmail.co.uk migration to Outlook.com: Qs answered
Software

Hotmail.co.uk migration to Outlook.com: Qs answered

11 Nov 2019
Hotmail.co.uk migration to Outlook.com: Qs answered
Software

Hotmail.co.uk migration to Outlook.com: Qs answered

11 Nov 2019
Lookout reveals mobile-first endpoint detection and response solution
Security

Lookout reveals mobile-first endpoint detection and response solution

21 Oct 2020

Most Popular

The top 12 password-cracking techniques used by hackers
Security

The top 12 password-cracking techniques used by hackers

5 Oct 2020
The enemy of security is complexity
Sponsored

The enemy of security is complexity

9 Oct 2020
What is a 502 bad gateway and how do you fix it?
web hosting

What is a 502 bad gateway and how do you fix it?

5 Oct 2020