We’re not doing enough to assure the security of ATMs. Yes, I keep my PIN number secret, patronize only well-lit machines at night and am wary of nearby strangers. But I hardly think it's paranoid to question the trustworthiness of the squirrels inside the ATMs who look at our cards, write our PIN numbers in their ledgers, take money from our accounts, count it and shove it through the slot. Who's with me?