TODAY: 1 NEW BREACH·LAST 30 DAYS: 4·RECORDS THIS YEAR: 5.6M·MOST TARGETED: GOVERNMENT·TOP ORIGIN: France·LARGEST BREACH: MedCore Systems — S3 Bucket Exposure (4.2M)·GLOBAL THREAT LEVEL: NORMAL·TODAY: 1 NEW BREACH·LAST 30 DAYS: 4·RECORDS THIS YEAR: 5.6M·MOST TARGETED: GOVERNMENT·TOP ORIGIN: France·LARGEST BREACH: MedCore Systems — S3 Bucket Exposure (4.2M)·GLOBAL THREAT LEVEL: NORMAL
DOC_ID_REF: OUTLIERS_AND_EXTREMES

World Records

A definitive archive documenting the absolute extremes in cyber warfare, data compromises, and historic security failures.

Largest Data Breach
YEAR: 2013

3 Billion

Yahoo// Records

The largest data breach in history, affecting every single user account existing at the time. Compromised data included names, email addresses, phone numbers, birthdates, and passwords.

Most Targeted Country
YEAR: All Time

USA

United States// Dominant

Holding the record for both the highest volume of individual data breaches and the most exposed records cumulatively over the past decade. The US remains the prime target.

Largest Ransom Paid
YEAR: 2021

$40M

CNA Financial// USD

The highest publicly known ransom payment to a cybercriminal syndicate (Phoenix Locker) following a devastating ransomware attack that disrupted their network.

Longest Undiscovered Breach
YEAR: 2014-2018

4.5 Years

Starwood (Marriott)// Duration

Attackers remained inside the database of Starwood properties undetected for roughly 4 years, compromising up to 500 million guest records globally.

Most Targeted Sector
YEAR: Current

Healthcare

Global// Industry

The healthcare sector remains the most profitable and vulnerable target due to the high black-market value of PII (Personally Identifiable Information) and health data.

Costliest Avg. Breach
YEAR: 2024

$9.77M

Healthcare// Average

The average cost to remediate a data breach in the healthcare industry reached nearly $10 million globally, easily making it the most expensive sector for incidents.

DATA INTEGRITY WARNING

These metrics represent publicized events only. The true scale of undisclosed or undiscovered global compromises remains unknown.