As if you didn’t know it already, (and I’ve posted about this before) your Windows passwords are not safe. According to an article on TechExtreme, some Swiss researchers have published a paper detailing how to crack Windows computers protected by alphanumeric passwords in an average of 13.6 seconds.Their approach can crack 99.9 percent of all alphanumerical passwords in 13.6 seconds, against a previous 101 seconds. The bottom line: When you can, include non-alphanumeric characters in your password, such as a question mark or a plus sign.