Data breaches in 2017

The public breach catalog records 54 breaches dated 2017, exposing about 1.6B accounts. 43 of them (80%) included passwords. The data type exposed most often was email addresses, found in 54 breaches.

2016 had 103 recorded breaches exposing about 1.7B accounts.

Largest breaches

  • MyHeritage: 2017-10-26, 92M accounts, Email addresses, Passwords
  • Edmodo: 2017-05-11, 43M accounts, Email addresses, Passwords, Usernames
  • piZap: 2017-12-07, 42M accounts, Email addresses, Genders, Geographic locations, Names, Passwords, Social media profiles
  • Taringa: 2017-08-01, 28M accounts, Email addresses, Passwords, Usernames
  • LiveJournal: 2017-01-01, 26M accounts, Email addresses, Passwords, Usernames
  • ai.type: 2017-12-05, 21M accounts, Address book contacts, Apps installed on devices, Cellular network names, Dates of birth, Device information, Email addresses
  • 8tracks: 2017-06-27, 18M accounts, Email addresses, Passwords
  • Zomato: 2017-05-17, 16M accounts, Email addresses, Passwords, Usernames
  • Bukalapak: 2017-10-23, 13M accounts, Email addresses, IP addresses, Names, Passwords, Usernames
  • TGBUS: 2017-09-01, 10M accounts, Email addresses, Passwords, Usernames

What was exposed most often

Every breach dated 2017

  • Onliner Spambot: 2017-08-28, 711M accounts, Email addresses, Passwords
  • River City Media Spam List: 2017-01-01, 393M accounts, Email addresses, IP addresses, Names, Physical addresses
  • B2B USA Businesses: 2017-07-18, 105M accounts, Email addresses, Employers, Job titles, Names, Phone numbers, Physical addresses
  • MyHeritage: 2017-10-26, 92M accounts, Email addresses, Passwords
  • Edmodo: 2017-05-11, 43M accounts, Email addresses, Passwords, Usernames
  • piZap: 2017-12-07, 42M accounts, Email addresses, Genders, Geographic locations, Names, Passwords, Social media profiles
  • Taringa: 2017-08-01, 28M accounts, Email addresses, Passwords, Usernames
  • LiveJournal: 2017-01-01, 26M accounts, Email addresses, Passwords, Usernames
  • ai.type: 2017-12-05, 21M accounts, Address book contacts, Apps installed on devices, Cellular network names, Dates of birth, Device information, Email addresses
  • 8tracks: 2017-06-27, 18M accounts, Email addresses, Passwords
  • Zomato: 2017-05-17, 16M accounts, Email addresses, Passwords, Usernames
  • Bukalapak: 2017-10-23, 13M accounts, Email addresses, IP addresses, Names, Passwords, Usernames
  • TGBUS: 2017-09-01, 10M accounts, Email addresses, Passwords, Usernames
  • Dueling Network: 2017-03-29, 6.5M accounts, Email addresses, IP addresses, Passwords, Usernames
  • Legendas.TV: 2017-10-01, 3.9M accounts, Email addresses, IP addresses, Names, Passwords, Usernames
  • SwordFantasy: 2017-01-20, 2.7M accounts, Email addresses, IP addresses, Passwords, Usernames
  • Ge.tt: 2017-05-04, 2.5M accounts, Email addresses, Names, Passwords, Social media profiles
  • Factual: 2017-03-22, 2.5M accounts, Email addresses, Employers, Phone numbers, Physical addresses
  • Master Deeds: 2017-03-14, 2.3M accounts, Dates of birth, Deceased statuses, Email addresses, Employers, Ethnicities, Genders
  • Bell (2017 breach): 2017-05-15, 2.2M accounts, Email addresses, Geographic locations, IP addresses, Job titles, Names, Passwords
  • Ster-Kinekor: 2017-03-09, 1.6M accounts, Dates of birth, Email addresses, Genders, Names, Passwords, Phone numbers
  • R2 (2017 forum breach): 2017-01-01, 1.0M accounts, Email addresses, Passwords, Usernames, Website activity
  • Little Monsters: 2017-01-01, 996K accounts, Dates of birth, Email addresses, Passwords, Usernames
  • Bolt: 2017-03-01, 995K accounts, Email addresses, IP addresses, Passwords, Usernames
  • PetFlow: 2017-12-09, 991K accounts, Email addresses, Passwords
  • FreeOnes: 2017-02-16, 960K accounts, Email addresses, IP addresses, Passwords, Usernames
  • CrimeAgency vBulletin Hacks: 2017-01-19, 942K accounts, Email addresses, Passwords, Usernames
  • Sephora: 2017-01-09, 780K accounts, Dates of birth, Email addresses, Ethnicities, Genders, Names, Physical attributes
  • Moneycontrol: 2017-09-07, 763K accounts, Email addresses, Genders, Geographic locations, Passwords, Phone numbers
  • DataCamp: 2017-01-30, 761K accounts, Email addresses, Geographic locations, IP addresses, Names, Passwords
  • MALL.cz: 2017-07-27, 735K accounts, Email addresses, Names, Passwords, Phone numbers
  • DaFont: 2017-05-16, 637K accounts, Email addresses, Passwords, Usernames
  • Reincubate: 2017-05-11, 616K accounts, Email addresses, Names, Passwords
  • Coachella: 2017-02-22, 600K accounts, Email addresses, IP addresses, Passwords, Usernames
  • CloudPets: 2017-01-01, 584K accounts, Email addresses, Family members' names, Passwords
  • Open CS:GO: 2017-11-28, 512K accounts, Avatars, Email addresses, IP addresses, Phone numbers, Physical addresses, Purchases
  • Netshoes: 2017-12-07, 500K accounts, Dates of birth, Email addresses, Names, Purchases
  • Coinmama: 2017-08-03, 479K accounts, Email addresses, Passwords, Usernames
  • Underworld Empire: 2017-04-25, 429K accounts, Email addresses, IP addresses, Passwords, Usernames
  • Exposed VINs: 2017-06-05, 397K accounts, Dates of birth, Email addresses, Family structure, Genders, Names, Phone numbers
  • Smogon: 2017-09-10, 386K accounts, Email addresses, Genders, Geographic locations, Passwords, Usernames, Website activity
  • Freedom Hosting II: 2017-01-31, 381K accounts, Email addresses, Passwords, Usernames
  • Health Now Networks: 2017-03-25, 322K accounts, Dates of birth, Email addresses, Genders, Health insurance information, IP addresses, Names
  • Russian America: 2017-01-01, 183K accounts, Email addresses, Names, Passwords, Phone numbers
  • TheTVDB.com: 2017-11-21, 182K accounts, Email addresses, Passwords, Usernames
  • Victory Phones: 2017-01-01, 166K accounts, Dates of birth, Email addresses, IP addresses, Names, Phone numbers, Physical addresses
  • Lyrics Mania: 2017-12-21, 109K accounts, Email addresses, Passwords, Usernames
  • The Fly on the Wall: 2017-12-31, 84K accounts, Age groups, Credit cards, Email addresses, Genders, Names, Passwords
  • Retina-X: 2017-02-23, 71K accounts, Email addresses, Passwords
  • dvd-shop.ch: 2017-12-05, 68K accounts, Email addresses, Passwords
  • Appartoo: 2017-03-25, 50K accounts, Ages, Auth tokens, Email addresses, Employment statuses, Genders, IP addresses
  • HoundDawgs: 2017-12-30, 46K accounts, Email addresses, IP addresses, Passwords, Website activity
  • Hub4Tech: 2017-01-01, 37K accounts, Email addresses, Passwords
  • 2fast4u: 2017-12-20, 18K accounts, Email addresses, Passwords, Usernames

Frequently asked questions

How many data breaches were there in 2017?

The public breach catalog records 54 breaches dated 2017, exposing about 1.6B accounts. The number keeps rising for recent years because breaches are often disclosed long after they happen.

What was the biggest data breach of 2017?

MyHeritage, with about 92M accounts, is the largest breach dated 2017 in this directory.

Were passwords leaked in 2017 breaches?

43 of the 54 breaches dated 2017 (80%) included passwords. If you had an account with any of them, change that password and anywhere you reused it.

Breach data sourced from Have I Been Pwned, used under CC BY 4.0. Additional breach metadata provided by XposedOrNot. DataExposed is an independent service and is not affiliated with or endorsed by either.