i recently found a malware that changes bitcoin addresses when copied to the hackers address so just watch out and check to make sure that the bitcoin address you copy comes out the same when you paste it 
Thanks for sharing this info. It is amazing the genius of malware programmers ... changing the copied address.... shocking.
Don't just check the address you're sending to, check the change address for that transaction also, it too can be substituted for an attacker's address.