This is the single most effective defense. Even if a password is correct, the attacker cannot bypass the second layer.
The 1.8M Combolist Leak: Why Your "Unique" Password Isn’t Enough 1.8m combolist.txt
Generate unique, complex passwords for every single service. This is the single most effective defense
Visit a reputable site like Have I Been Pwned to see if your email appears in any recent leaks. 1.8m combolist.txt