Over 1.8 million people had their fingerprints and medical records stolen in a single hospital system breach earlier this year. A cruise company lost passport and license numbers for nearly 6 million customers because one employee fell for a social engineering attack.
If you're searching for the latest data breach news, you're probably wondering if your own information was part of one. The data breach list for 2026 keeps growing, and each entry means real consequences, from drained bank accounts to stolen identities.
Here's a breakdown of the biggest data breaches in 2026 so far, what data was taken, and exactly what to do if you were affected.
Biggest Data Breaches in 2026
The recent data breaches of 2026 have hit healthcare, education, banking, tech, and retail alike. A few threat groups, especially ShinyHunters, keep showing up across multiple incidents, and most of the largest breaches started with social engineering or compromised third-party vendors rather than direct hacking.
Across the incidents below, more than 300 million records have been claimed stolen so far. Healthcare leads the sector count (NYC Health + Hospitals, Navia, Stryker), followed by education (Canvas), travel (Carnival), telecom (Charter), and consumer tech (Match Group).
NYC Health + Hospitals (1.8 Million People)
An unnamed third-party vendor was compromised, giving attackers access to the largest public health system in the U.S. from late November 2025 through February 2026. Data stolen included medical records, Social Security numbers, passport numbers, and biometric fingerprints. Unlike a password, a stolen fingerprint can't be changed. The hospital system offered credit monitoring to affected individuals. PII exposed: SSN, healthcare records, biometric, government ID. (Source)
Instructure / Canvas (275 Million Records)
ShinyHunters breached the education platform twice in two weeks during April and May 2026. The group claimed 3.65 terabytes of data from nearly 9,000 institutions, including Harvard and Princeton. Exposed data included names, email addresses, student IDs, and private messages. Instructure paid a ransom, but paying doesn't undo the data theft. PII exposed: contact info, student records, private messages. (Source | Full Canvas breakdown)
Charter Communications / Spectrum (4.9 Million Accounts)
A single voice phishing call to a Charter employee gave ShinyHunters access to the company's Salesforce environment. Names, email addresses, phone numbers, and home addresses were exposed. Charter didn't pay the ransom, and the data was published online. That means one phone call put 4.9 million people's personal details on the open internet. PII exposed: contact info, home address. (Source)
Carnival Corporation (Nearly 6 Million People)
One socially engineered employee account opened a path into Carnival's systems. Stolen data included names, dates of birth, passport numbers, and driver's license numbers. Passport and license numbers can't be rotated like a credit card, which makes them useful for fraud long after the breach itself fades from the news. PII exposed: government ID (passport, license), date of birth, contact info. (Source)
Navia (2.7 Million People)
An exposed API allowed attackers to steal names, Social Security numbers, dates of birth, phone numbers, email addresses, and health plan information over a three-week window from December 2025 into January 2026. Most affected people didn't choose Navia directly, their employers did, so millions had no control over how their data was stored. PII exposed: SSN, healthcare enrollment, contact info. (Source | Full Navia breakdown)
Match Group (10 Million Records)
ShinyHunters claimed responsibility for breaching the parent company of Tinder, Hinge, and OkCupid. The entry point was reportedly a third-party marketing analytics vendor. User and corporate data were both affected. PII exposed: contact info, user profile data. (Source | Full Match Group breakdown)
Stryker (Internal Systems Wiped)
An Iran-linked group called Handala attacked the medical device company in March 2026. Rather than stealing data, the attackers wiped Windows-based devices across the organization, causing system outages and office shutdowns. No customer data was confirmed stolen, but the operational disruption showed that not every attack is about theft, some are about sending a message. (Source)
What Stolen Data Gets Used For
Keeping up with data breach 2026 incidents matters because stolen data doesn't just sit on a dark web forum. Leaked records get sold, bundled with other breach data, and used for identity theft, phishing, and fraud, sometimes within days of being posted.
Identity Theft and Account Takeovers
A leaked Social Security number paired with your name and date of birth can be enough to open credit cards, file fake tax returns, or take out loans in your name. Stolen email and password combinations let attackers log into your existing accounts, especially if you reuse passwords. If you suspect you're a victim, the FBI's Internet Crime Complaint Center accepts reports and tracks these cases.
Targeted Phishing and Scam Calls
When attackers know your employer, your recent purchases, or which services you use, they can send phishing emails that look completely legitimate (no typos, no weird links, just a message that reads like it came from someone you trust). Exposed phone numbers lead to scam calls and vishing attempts that reference real details from your life.
Data Broker Profiles Get Richer
Each breach adds more data points to the profiles data broker sites already have on you. Your home address from one breach, your phone number from another, and your employer from a third all get stitched together. The more complete your profile, the easier you are to target.
Recovery Steps If Your Data Was Exposed
If your information appeared in any of the latest cyber attacks or new data breaches this week, act fast. Attackers move quickly once stolen data is published or sold. The steps below cover what to do right after a breach.
Step 1: Check if You Were Affected
Visit HaveIBeenPwned.com and enter your email address. The site checks your email against known breach databases and tells you which incidents included your information. If you get a match, move to the next steps immediately.
Step 2: Change Passwords on Affected Accounts
Change the password for every account tied to the breached service. If you reused that password anywhere else, change it there too. Use a different, strong password for each account going forward. For high-value accounts (banking, email, healthcare portals), rotating passwords every 90 days reduces the window attackers have to use stolen credentials.
- Start with email, banking, and any account that holds financial data
- Use a password manager so you don't have to remember dozens of unique passwords
- Never reuse passwords across accounts
Step 3: Turn On Two-Factor Authentication
Enable two-factor authentication (2FA) on every account that supports it. Use an authenticator app rather than SMS whenever possible, since SMS codes can be intercepted through SIM swap attacks.
- Banking and investment accounts first
- Primary email accounts
- Social media and cloud storage
Step 4: Freeze Your Credit
Contact all three credit bureaus (Equifax, Experian, TransUnion) and place a credit freeze. A freeze is free and makes it much harder for anyone to open new accounts in your name. You can temporarily lift it when you need to apply for credit. The FTC's identity theft recovery site walks you through the process. If your SSN was exposed, also request an IRS Identity Protection PIN at irs.gov to block fraudulent tax filings in your name.
Step 5: Monitor for Misuse
Watch your bank statements, insurance claims, and credit reports for anything you don't recognize. Set up alerts for leaked personal information so you know quickly if your data surfaces in underground markets.
Step 6: Remove Your Data from Broker Sites
Even after a breach, your exposed data keeps circulating through people-search sites and data brokers. Submitting opt-out requests to data brokers cuts off one of the biggest distribution channels for stolen personal information. If you want to handle removals yourself, step-by-step opt-out guides walk you through the process for major broker sites.
Step 7: Use Unique Email Aliases and Phone Numbers
The common thread across the biggest data breaches 2026 has seen is that one real email address or phone number links your accounts together. When attackers breach one service, they use that shared email or number to find and attack your other accounts. Using unique aliases for each account breaks that chain. If one alias gets leaked, none of your other accounts are connected to it.
How Cloaked Helps You Recover and Stay Protected
Cloaked is useful here in a straightforward way. You can generate unique email aliases and phone numbers for every account, so a breach at one service doesn't hand attackers your real contact information. Cloaked also removes your personal data from 130+ data broker sites, cutting off the pipeline that feeds your information to scammers. With dark web monitoring and $1M in identity theft insurance, you get layered coverage that works before, during, and after a breach.
Run a safety scan and see how exposed your information already is, or contact the team to learn more.
FAQs
How do I know if my data was in a recent data breach?
The fastest free way to check is HaveIBeenPwned.com. Enter your email address, and the site tells you which known breaches included your information. If your email appears in a breach, change the password for that service and any account where you used the same password.
What should I do first after a data breach?
Change the passwords on your most sensitive accounts, starting with email and banking. Then turn on two-factor authentication using an authenticator app. If Social Security numbers or financial details were exposed, freeze your credit at all three bureaus.
Can I remove my personal information from the internet after a breach?
You can submit opt-out requests to data broker and people-search sites to reduce how much of your information is publicly available. Some services automate these removals across 100+ broker sites. Full removal takes time, because brokers often re-list your data, so ongoing monitoring and removal matters.
What was the biggest data breach in 2026?
The Instructure / Canvas breach is one of the largest by volume, with ShinyHunters claiming 275 million records across nearly 9,000 educational institutions. The NYC Health + Hospitals breach is one of the most sensitive, since it included biometric data like fingerprints that can't be reissued.
Why do data breaches keep happening to large companies?
Most breaches in 2026 started with a person, not a technical flaw. Social engineering, phishing, and compromised third-party vendors were the top entry points. Attackers target the human layer because it's often easier to trick an employee than to break through a firewall.
Does a credit freeze fully protect me after a breach?
A credit freeze makes it much harder for new accounts to be opened in your name. A freeze doesn't stop attackers from using stolen data for phishing, account takeovers, or medical identity theft. Pairing a freeze with unique aliases, password changes, and monitoring gives you much stronger coverage.
