Simplistic 'Yo' Messaging App Soars in App Store Charts, Proves Vulnerable to Hacking
The Yo messaging app [Direct Link] debuted earlier this year and recently rocketed up the iOS App Store charts, where it currently sits at number five among top free iPhone apps in the United States. The simplistic app that does nothing more than allow users to ping contacts with a simple "Yo" message may be gaining traction with its quirky ease of use, but a hack, confirmed by Yo founders to TechCrunch, may put users' personal information at risk.
According to the TechCrunch report, a student at Georgia Tech discovered a flaw that allows a nefarious user to discover the phone number of another Yo user, spoof a message from any Yo member and send a text-based push notification to recipient devices. Yo founder Or Arbel confirmed to TechCrunch the service was having "security issues," but did not provide details on the vulnerability, only stating that the issues will be resolved soon.
Founder Or Arbel has now confirmed that Yo was “having security issues”.
He told TechCrunch: “Some of the stuff has been fixed and some we are still working on. We are taking this very seriously.”
He said he could not reveal which hacks were still live. He said the company has brought in a specialist security team to deal with the issues
Arbel said he hoped the security problems would be fixed “in next few hours.”
According to Valleywag, the idea for Yo came from Israeli investor and Mobli CEO Moshe Hogeg, who wanted an easy way to communicate with his secretary. Developer Or Arbel ran with the idea and created the Yo app, which Hogeg uses. Life Before Us LLC, the company created by Abel, recently received $1 million in angel funding to continue development of the Yo app.
Popular Stories
In select U.S. states, residents can add their driver's license or state ID to the Apple Wallet app on the iPhone and Apple Watch, and then use it to display proof of identity or age at select airports and businesses, and in select apps.
The feature is currently available in 13 U.S. states and Puerto Rico, and it is expected to launch in at least seven more in the future.
To set up the...
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another nine months, there are already plenty of rumors about the devices.
Below, we have recapped 12 features rumored for the iPhone 18 Pro models.
The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras
Under-screen Face ID
Front camera in...
Apple hasn't updated the Apple TV 4K since 2022, and 2025 was supposed to be the year that we got a refresh. There were rumors suggesting Apple would release the new Apple TV before the end of 2025, but it looks like that's not going to happen now.
Subscribe to the MacRumors YouTube channel for more videos.
Bloomberg's Mark Gurman said several times across 2024 and 2025 that Apple would...
2026 is almost upon us, and a new year is a good time to try out some new apps. We've rounded up 10 excellent Mac apps that are worth checking out.
Subscribe to the MacRumors YouTube channel for more videos.
Alt-Tab (Free) - Alt-Tab brings a Windows-style alt + tab thumbnail preview option to the Mac. You can see a full window preview of open apps and app windows.
One Thing (Free) -...
Earlier this month, Apple released iOS 26.2, following more than a month of beta testing. It is a big update, with many new features and changes for iPhones.
iOS 26.2 adds a Liquid Glass slider for the Lock Screen's clock, offline lyrics in Apple Music, and more. Below, we have highlighted a total of eight new features.
Liquid Glass Slider on Lock Screen
A new slider in the Lock...
Apple reportedly tested a version of the first-generation AirPods with bright, iPhone 5c-like colored charging cases.
The images, shared by the Apple leaker and prototype collector known as "Kosutami," claim to show first-generation AirPods prototypes with pink and yellow exterior casings. The interior of the charging case and the earbuds themselves remain white.
They seem close to some...
Apple's first foldable iPhone, rumored for release next year, may turn out to be smaller than most people imagine, if a recent report is anything to go by. According to The Information, the outer display on the book-style device will measure just 5.3 inches – that's smaller than the 5.4-inch screen on the iPhone mini, a line Apple discontinued in 2022 due to poor sales. The report has led ...
With the end of 2025 near, the time has come to look back at the devices and accessories that Apple discontinued throughout the year.
Most of the products that were discontinued this year were simply replaced by a new model with an updated chip. However, the iPhone SE line was entirely discontinued when the iPhone 16e launched, and the iPhone Plus line is being phased out.
Below, we have...
Samsung is working on a new foldable smartphone that's wider and shorter than the models that it's released before, according to Korean news site ETNews. The "Wide Fold" will compete with Apple's iPhone Fold that's set to launch in September 2026.
Samsung's existing Galaxy Z Fold7 display is 6.5 inches when closed, and 8 inches when open, with a 21:9 aspect ratio when folded and a 20:18...
