Massive data dump: Treasure trove for hackers as 3 billion passwords exposed 11 Feb, 2021 06:02 PM 3 minutes to read The hack has exposed a massive amount of passwords. Photo / 123RF NZ Herald Over 3 billion password and email combinations have been compiled into one massive data dump, a treasure trove for hackers that experts have described as the "mother of all leaks". The list, which was dubbed COMB (Compilation of Many Breaches), is a collection of data from previous breaches and includes passwords from tech giants such as LinkedIn and Netflix. Read More The scale of the hack means it is likely that most internet users have been affected in some way and users who replicate passwords across multiple sites are particularly at risk.