Security experts have advised using long, complex passwords composed of lower- and-uppercase letters, digits, and symbols (requiring users to type strings like!V4Dv$hJUF2g%J on a daily basis) to avoid falling victim to brute-force attacks. Complex passwords are hard to remember, but most users don’t bother and end up finding workarounds such as storing passwords in plaintext computer documents or reusing them across different accounts. Plaintext passwords are even worse than simply constructed passwords.”]