Dick Craddock of Windows Live explains on the Inside Windows Live Blog:
At Hotmail, we know that account hijacking is a big problem, and we continue to work hard to prevent it. We’ve noticed a couple of things about hijacked accounts. First, many accounts have weak passwords that make them easy targets for hijackers. Second, when someone’s account gets hijacked, their friends often find out before they do, because the hijacker uses their account to send spam or phishing email to all their contacts.
These two observations led us to develop a couple of new features that help protect your accounts. The first lets you report a friend’s account as compromised – a feature unique to Hotmail – and the second prevents you from using common passwords that make your account easy to hack.
Maybe you’ve had this happen to you: You sign in to Hotmail, and you see you’ve got new mail from one of your friends. You open the message only to discover that it’s spam! Maybe it’s obvious spam – like an ad for a product. Or maybe it’s a more involved story – like a plea for money, with an explanation that your friend is stuck in a foreign country and needs cash, when you know for sure that your friend is safe and sound at home.
Whatever the case, one thing is for sure: this email isn’t really from your friend at all. Instead, it’s from a spammer who has hijacked your friend’s account. When this happens, you probably call or text your friend or contact them on an alternate email address to let them know that their email account has been compromised. But you wish you could do more.
Now you can. Hotmail lets you report your friend’s account as compromised. It’s easy: When you get that spam message supposedly from your friend, you just click “My friend’s been hacked!” on the “Mark as” menu:
You can also report an account as compromised when you mark a message as junk or otherwise move a message to the Junk folder:
Our compromise detection system is always working in the background to detect unusual behavior. When we detect bad behavior from an account (like an account that suddenly starts sending spam), we mark that account as compromised. It’s a bit like your credit card company putting a hold on your account when they detect suspicious activity.
When you report that your friend’s account has been compromised, Hotmail takes that report and combines it with the other information from the compromise detection engine to determine if the account in question has in fact been hijacked. It turns out that the report that comes from you can be one of the strongest “signals” to the detection engine, since you may be the first to notice the compromise. So, when you help out this way, it makes a big difference!
Once we mark the account as compromised, two things happen:
We released this feature a few weeks ago. Initially, it only let you report Hotmail accounts that were compromised. But it worked really well – we got thousands of reports of compromised accounts.
Of course, we didn’t want to stop there; we wanted to go a step farther and make it work for any email account. After all, even if you’re a Hotmail user, you probably get email from friends using other email providers, and those accounts can get compromised, too.
We did the work to enable other email providers like Yahoo! and Gmail to receive these compromise reports from Hotmail including those submitted by you, and those providers will now be able to use the reports in their own systems to recover hacked accounts.
So now, in Hotmail, you can report any email account as compromised, and Hotmail will provide the compromise information to both Yahoo! and Gmail.
We’ve had this feature turned on for only a few weeks, and we’ve already identified thousands of customers who have had their accounts hacked and helped those customers reclaim their accounts. And we’ve found it to be very effective and fast. Accounts that you report as compromised are typically returned to the rightful owner within a day.
Of course, we don’t want to just detect when accounts are compromised; we want to prevent them from being compromised in the first place. That’s why we continue to innovate and build more features to help protect your account.
We‘re making another addition to the long list of account security and protection features that we’ve released over the last year. We will now prevent our customers from using one of several common passwords. Having a common password makes your account vulnerable to brute force “dictionary” attacks, in which a malicious person tries to hijack your account just by guessing passwords (using a short list of very common passwords). Of course, Hotmail has built-in defenses against standard dictionary attacks, but when someone can guess your password in just a few tries, it hardly constitutes “brute force!”
Common passwords are not just “password” or “123456” (although those are frighteningly common), but also include words or phrases that just happen to be shared by millions of people, like "ilovecats" or "gogiants."
This new feature will be rolling out soon, and will prevent you from choosing a very common password when you sign up for an account or when you change your password. If you're already using a common password, you may, at some point in the future, be asked to change it to a stronger password.
Of course, having a strong password is just one step to protecting your account. You should also provide “proofs,” including an alternate email address, a question and secret answer, and, even a mobile number where we can reach you via text message. You can learn more about how to set up account proofs, or go ahead and set up your account proofs now.
When it comes to account security, the Hotmail team is dedicated to doing all we can to help protect your Hotmail account from thieves and spammers. We’ll continue to work to protect your account with new and innovative features, and now you can join us in the fight and help protect your own account and your friends’ accounts, too.
Dick Craddock Group Program Manager, Hotmail
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