450,000 yahoo passwords hacked and majority get into such security breaches. Little prudence can save you becoming a victim to hacking. Your weak passwords make you defenseless, so make it antiseptic and protect. Use different passwords for each account; log off when someone is around, employ comprehensive security software and avoid using Internet café computers.
Avoid entering passwords at WI-Fi unsecured connection places. Never disclose your password. Best is to change passwords periodically. Use easy to memorize, hard to guess passwords. Use, upper and lowercase letters, symbols, numbers in your password, the more the merrier. Check password strength, pay heed to its advice.