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Preventing spam and phishing using e-mail authentication
Hi, my name is John Scarrow and, in conjunction with other product groups, I oversee service abuse and security issues for Windows Live and other Microsoft products such as Internet Explorer. Building from Dick Craddock’s previous post , I’m going to get into the nuts and bolts of how we fight phishing...
Thu, Feb 4 2010
Hey! My friend’s account was hacked!
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...
Thu, Jul 14 2011
I will NEVER ask for your password
There are a lot of bad things on the Internet, and few are worse than phishing scams. But there is a certain class of phishing scam that has earned a special level of disdain and disgust, at least from me. I’m talking about the phishing scams that target Hotmail customers using my name, my picture, and...
Wed, Aug 10 2011
Getting a reputation: How SmartScreen looks at URLs
I'd like to talk a bit about how we determine the reputation of different URLs and IPs and use this to protect against spam, phishing, and other abuse in Internet Explorer and Windows Live Hotmail . Let's start with a bit of background. When an abuser–a spammer, phisher, or malware distributer–attacks...
Fri, Mar 12 2010
Just say no to bogus Messenger invitations
Windows Live Messenger is both a powerful and fun communications tool for staying in touch with your friends, family and co-workers. It is a semi-enclosed environment where you can freely interact with the people you know and trust – the people in your network. Unfortunately, over the last couple...
Mon, Mar 29 2010
Turning off vacation replies to fight spam in Hotmail
We’ve posted quite a bit recently about the work we’re doing to prevent spam on Windows Live ( Just say no to bogus Messenger invitations , Preventing spam and phishing using e-mail authentication , Spam, phishing, and other annoyances , and Fighting the war on spam ). In our fight against spam, we sometimes...
Fri, Apr 9 2010
90% less spam in Hotmail, 15% less spam on the Internet
In our war on spam, we’re making real progress. We’ve cut spam in Hotmail inboxes by 90% from its peak. We’ve played a key role in reducing spam on the Internet by 15% from its peak. And we’ve made it harder for spammers to use Hotmail to send spam – reducing “outbound spam” from Hotmail by 75%. Last...
Wed, Aug 3 2011
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