text: The notable data breaches typically published by major news services are the work of black hat hackers. In a data breach, hackers can steal the financial, personal, or digital information of customers, patients, and constituents. The hackers can then use this information to smear a business or government agency, sell it on the dark web, or extort money from businesses, government agencies, or individuals. The United States experienced a record number of 1,862 data breaches in 2021, according to the Identity Theft Resource Center's 2021 Data Breach Report. Data breaches have been on the rise for some time. From 2013 to 2014, black hat hackers broke into Yahoo and stole 3 billion customer records, making it possibly the largest data breach ever. In addition, the adult website Adult FriendFinder was hacked in October 2016, and over 412 million customer records were taken. A data breach that occurred between May and July 2017 exposed more than 145 million customer records, making the national credit bureau Equifax another victim of black hat hacking.
  Strategies
  Concealing
  One of the most famous black hat methods is to utilize nasty "doorway pages", which are intended to rank highly for specific search queries. Accordingly, the substance of these doorway pages is stowed away from both the clients and the web indexes. Doorway pages are designed to deceive search engines so that they cannot index or rank a website for synonymous keywords or phrases.