They can also scan files regularly for unusual changes in file sizes, programs that match known malware, suspicious email attachments and other warning signs. (entrepreneur.com)
Check your credit score regularly for unusual changes and always check credit card statements. (lendkey.com)
I examined this very sweet dog, and found that her eye was indeed very red, as well as some very unusual changes within the front chamber of the eye. (animalwellctr.com)