CDNLeafs

I was browing Netflix and Twitter and I kept getting sway-CDN.com blocked from outbound connection, reason was phishing. I am very careful when browsing the net (noscript, adblock) so not sure if I actually picked up a malware. Upon looking at it, it looked like sway-cdn.com is owned by microsoft... was this a false alert? Panicking if it isn't. Tnx.