Quick wins for a faster PC:
Scan for outdated or missing drivers - takes under a minuteDriver Scan →Clear out junk files and repair common Windows errorsFree Scan →Fix the driver behind crashes, sound loss and screen glitchesFind Drivers →iTechGuides is reader-supported. When you buy through links on our site, we may earn an affiliate commission. As an Amazon Associate I earn from qualifying purchases. Learn more
A Twitter vulnerability allowed someone with an email address or phone number to find the account linked to it, potentially exposing the identity behind an anonymous or pseudonymous profile. Twitter said the flaw had been exploited before it was fixed, but did not identify the actor. Its August 2022 notice warned that pseudonymous users could be targeted by “state or other actors”; it did not establish that a nation-state exploited this flaw.
What the Twitter breach exposed
The flaw enabled account matching, not password theft. Someone could submit an email address or phone number and learn which Twitter account was associated with it. That could connect an anonymous Twitter account to a person if the submitted contact detail was already known or could be linked to a real identity.
Twitter said a code update in June 2021 introduced the issue. The company received a report through its bug-bounty program in January 2022, investigated it, and fixed the flaw. In July 2022, Twitter learned from a press report that an actor was offering compiled data for sale. After reviewing a sample, it confirmed the flaw had been exploited before the fix. Twitter said it could not confirm every potentially affected account.
The Tool Desk
Outbyte PC Repair FREERepair Windows errors before they cause bigger problemsFix Now →Outbyte Driver Updater FREEFix the driver behind crashes, sound loss and screen glitchesFind Drivers →Twitter’s notice said no passwords were exposed in this incident. The central risk was that contact information could reveal account identity, which could matter to people using pseudonyms for privacy or safety.
#1 Best Overall
- [2 Pack] This product includes 2 pack privacy screen protectors.WORKS FOR iPhone 17e/16e/14/iPhone 13/13 Pro 6.1 Inch tempered glass screen protector.Featuring maximum protection from scratches, scrapes, and bumps.[Not for iPhone 16 6.1 inch, iPhone 13 mini 5.4 inch, iPhone 13 Pro Max/iPhone 14 Pro Max/iPhone 14 Plus 6.7 inch, iPhone 14 Pro 6.1 inch]
- Specialty: to enhance compatibility with most cases, the Tempered glass does not cover the entire screen. HD ultra-clear rounded glass for iPhone 17e/16e/14/iPhone 13/13 Pro is 99.99% touch-screen accurate.
- 99.99% High-definition clear hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers,screen is only visible to persons directly in front of screen.Good choose when you are in the bus,elevator,metro or other public occasions.(Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
Was a nation-state behind the 2022 exploitation?
The sources do not establish that. Twitter warned that pseudonymous users could be targeted by “state or other actors,” but did not attribute the 2022 exploitation to a nation-state or name the actor. The headline phrase “nation state hackers” should therefore be understood as a risk scenario, not a confirmed finding about who used this vulnerability.
A separate 2020 Twitter notice discussed unusual, high-volume queries to a phone-number matching endpoint. Twitter said some IP addresses involved might have ties to state-sponsored actors. That is a different event and does not prove who exploited the 2022 flaw.
What happened to the reported 5.4 million, 200 million, and 400 million records?
In a January 2023 update, X said the 5.4 million accounts reported in November 2022 matched the exposure described in its August 2022 notice. X also addressed claims about datasets described as containing 200 million accounts and 400 million instances of user data. It said it could not correlate those datasets to the earlier exposure or to exploitation of X systems, and assessed that the data was likely collected from publicly available online sources. X said the datasets it analyzed contained no passwords.
Rank #2
- Perfect Fit for iPhone 17 Pro Max：Engineered exclusively for iPhone 17 Pro Max with seamless edge-to-edge coverage, ensuring precise alignment and reliable full-screen protection.
- Advanced Privacy Protection：Features a 28° privacy filter with smooth 2.5D curved edges, preventing side glances in public. Your screen remains visible only to you—ideal for commuting, traveling, and crowded environments.
- Effortless Installation：Equipped with an auto dust-elimination tool that delivers a fast, accurate, and bubble-free application, keeping your screen perfectly clear with minimal effort.
- Military-Grade Protection：Made of nano-reinforced 9H tempered glass, SGS certified. Provides 5X stronger scratch resistance and proven durability, withstanding thousands of pressure and impact tests.
- Smudge & Fingerprint Resistant：Hydrophobic and oleophobic coating repels fingerprints, sweat, and oil—ensuring your screen stays clean, clear, and smooth to the touch.
These are X’s published investigation findings, not independent verification of the provenance of every record. The figures should not be read as a confirmed total of unique victims of the 2022 flaw. X summarized its conclusion this way: “Therefore, based on information and intel analyzed to investigate the issue, there is no evidence that the data being sold online was obtained by exploiting a vulnerability of X systems.” Read X’s January 2023 update.
Quick Recap
Best Value
- 【Industry-Leading 100% Anti-Spy Privacy Protection】Designed for iPhone 17 Pro Max. Larger iPhone screens are easier for others to glance at, so UltraGlass uses patented, SEGI-certified 25° Blackout-3 optical technology to help block side views and keep emails, banking apps, and private content visible only to you—while keeping the front view HD-clear and comfortable through hours of scrolling and streaming.
- 【Unbreakable TOP 9H+ Glass, the Excellent 2nd Screen for Your iPhone】Boasting unparalleled shatter resistance and durability. And the core excellence is the top 9H+ tempered glass material, which is widely applied in aerospace and military fields for its ① Shatter-proof ② Scratch & Wear Resistance ③ Durability that is 7-8 times higher than other materials. Thus, UltraGlass builds a second tough screen for your iPhone 17 Pro Max.
- 【Industry NO.1 Military-Grade Shatterproof】Authorized by the International Military Standard with 50+ rigorous engineering tests of 220 lbs impact, 8,000+ drop tests, 25,000+ scratch tests, etc., its strength, toughness and durability perform NO.1 among all glass. By especially breaking the industry's record with a 12ft drop, the iPhone 17 Pro Max screen protector is ensured to be unbreakable from its surface to every edge and corner.
- 【Invisible Armor, 1:1 Full Covers the iPhone's Screen】Mimicking the iPhone's original screen design, it uses a 1:1 3D curved reinforced black edge that wraps around every curve — case friendly — while securing even the most vulnerable edges. Seamlessly blending with the iPhone 17 ProMax screen, it's virtually invisible and feels like the original screen while offering enhanced full-screen protection.
- 【0 Bubbles + 0 Dust + 0 Misaligned =100% Successful Installation】Includes everything you need with pioneering automatic positioning, dust removal, and absorption technology, making the installation just effortlessly easy in seconds. No bubbles, no troubles—transforming beginners into experts!
Rank #4
- [3+3 Pack] This product includes 3 pack privacy screen protectors and 3 pack camera lens protectors with Installation Frame. Works For iPhone 16 [6.1 inch] tempered glass screen protector and camera lens protector. Featuring maximum protection from scratches, scrapes, and bumps. [Not for iPhone 16e 6.1 inch, iPhone 16 Pro 6.3 inch, iPhone 16 Pro Max 6.9 inch, iPhone 16 Plus 6.7 inch]
- Night shooting function: specially designed iPhone 16 6.1 Inch camera lens protective film. The camera lens protector adopts the new technology of "seamless" integration of augmented reality, with light transmittance and night shooting function, without the need to design the flash hole position, when the flash is turned on at night, the original quality of photos and videos can be restored.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers, screen is only visible to persons directly in front of screen. Good choose when you are in the bus,elevator,metro or other public occasions. (Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Easiest Installation - Please watch our installation video tutorial before installation. Removing dust and aligning it properly with the help of the included installation frame before actual installation, enjoy your screen as if it wasn't there.
- 99.99% High-definition clear hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints, and enhance the visibility of the screen.
Rank #3
- [3 Pack] This product includes 3 pack privacy screen protectors.WORKS FOR iPhone 16/iPhone 15/iPhone 15 Pro 6.1 Inch tempered glass screen protector. Due to the rounded edge design of the iPhone 16/iPhone 15/iPhone 15 Pro and to enhance compatibility with most cases,the tempered glass screen protectors will be slightly smaller than the phone screen.[Not for iPhone 16e 6.1 inch, iPhone 15 Plus/iPhone 15 Pro Max/iPhone 16 Plus 6.7 inch,iPhone 16 Pro 6.3 inch,iPhone 16 Pro Max 6.9 inch]
- Specialty: HD rounded glass for iPhone 16/iPhone 15/iPhone 15 Pro 6.1 Inch is 99.99% touch-screen accurate.
- 99.99% High-definition hydrophobic and oleophobic screen coating protects against sweat and oil residue from fingerprints. Featuring maximum protection from scratches, scrapes, and bumps.
- High Privacy: Keeps your personal, private, and sensitive information hidden from strangers,screen is only visible to persons directly in front of screen.Good choose when you are in the bus,elevator,metro or other public occasions.(Note: Due to this privacy cover will darken the image to prevent the peeking eyes near you, you might need to turn your device display brightness up a bit when use it.)
- Online video installation instruction: Easiest Installation - removing dust and aligning it properly before actual installation,enjoy your screen as if it wasn't there.
How this flaw differs from other Twitter incidents
| Event | Mechanism | What was established |
|---|---|---|
| 2022 account-matching flaw | Submitting an email address or phone number could reveal the associated account. | Twitter said the flaw was exploited before it was fixed; it did not identify the actor or confirm every affected account. It said passwords were not exposed in this incident. Twitter’s August 2022 notice. |
| 2020 phone-number endpoint queries | Unusual, high-volume queries to a phone-number matching endpoint. | Twitter said some queried IP addresses might have ties to state-sponsored actors. This was separate from the 2022 flaw. Twitter’s 2020 notice. |
| July 2020 account takeover | Employee social engineering gave attackers access to internal tools. | The New York State Department of Financial Services documented the attack and resulting account takeovers. It was not the contact-lookup flaw. New York DFS investigation report. |
| FTC contact-data matter | Use of security contact information for advertising targeting. | The FTC’s 2022 announcement described a complaint alleging Twitter used phone numbers and email addresses provided from 2014 to 2019 for targeted advertising. The FTC said more than 140 million users provided such details. This was a separate privacy matter, not the 2022 account-matching vulnerability. FTC announcement. |
How to reduce identity-linking and account risks
For pseudonymous accounts
- Check whether the account’s associated email address or phone number is publicly known, reused, or otherwise connected to your real identity.
- Where practical, use a separate contact email address that does not identify you publicly. Twitter’s advice was: “To keep your identity as veiled as possible, we recommend not adding a publicly known phone number or email address to your Twitter account.”
- Remember that changing contact details now cannot undo any historical matching or exposure that may already have occurred.
For login protection
- Use an authentication app or a hardware security key for two-factor authentication, as X recommended. A security key helps protect account access; it does not prevent contact-to-account matching or reverse an earlier exposure.
- Be cautious with urgent or information-seeking emails that claim to concern your account. Verify requests through the service rather than providing credentials or personal details in response.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
