How NOT to sleep at night

"A hacker claiming to have broken into networks of dozens of banks and stolen customer data, has released as proof a file that contains names, addresses, e-mail addresses, and phone numbers in plain text, but no credit card numbers.
"I penetrated over 79 large banks, I've been targetting these banks since 3 months," read a tweet from the Twitter account of Reckz0r.
"Actually, I didn't hacked VISA & Mastercard, I hacked the banks, #Chase..etc."
Everything you need NOT to be able to sleep at night...