25 in a sequence with 36 characters? By my calcs that's something greater than 2 to the 50th power, a really big, freaking number. Somebody really has to be out to get YOU personally to go to that much trouble...like the NSA. If the NSA is after you, you're screwed anyway. Stealing passwords is much easier via social engineering or malware where you just trick gullible users into giving them up or steal them via software. Just make up a good, strong password and stay vigilant, the rest is up to fate. I don't think there's that many hackers out to steal photographs, but if there were, it's just part of the risk we take when we sign on for this.
David you would be surprised at how often brute force attacks are attempted. It's all automated with scripts. That's why secure systems have lockouts after a certain number of failed attempts. And even if they are stolen they are generally encrypted and still need to be cracked.
Type a 15 character, 3 word phrase with spaces into that site. Easy to remember, impossible to crack with current technology.