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
CES 2026 has just provided a first glimpse of the folding display technology that Apple is expected to use in its upcoming foldable iPhone. At the event, Samsung Display briefly showcased its new crease-less foldable OLED panel beside a Galaxy Z Fold 7, and according to SamMobile, which saw the test booth before it was abruptly removed, the new panel "has no crease at all" in comparison.
The ...
Apple is not expected to release a standard iPhone 18 model this year, according to a growing number of reports that suggest the company is planning a significant change to its long-standing annual iPhone launch cycle.
Despite the immense success of the iPhone 17 in 2025, the iPhone 18 is not expected to arrive until the spring of 2027, leaving the iPhone 17 in the lineup as the latest...
Apple has designed a limited edition version of the AirPods Pro 3 to celebrate Lunar New Year, and customers in select countries can purchase them starting today. The Year of the Horse Special Edition AirPods Pro 3 feature a unique horse emoji character that's otherwise unavailable.
Customers in China, Hong Kong, Taiwan, Malaysia, and Singapore are able to buy the AirPods, and they'll be...
JPMorgan Chase has reached a deal to take over operation of the Apple Card, reports The Wall Street Journal. Barring any "last minute hiccups," the deal should be announced shortly after over a year of negotiations.
Reports began circulating over two years ago that current Apple Card issuer Goldman Sachs was looking to end its partnership with Apple as part of an effort to scale back on...
Logitech users on macOS found themselves locked out of their mouse customizations yesterday after the company let a security certificate expire, breaking both its Logi Options+ and G HUB configuration apps.
Logitech devices like its MX Master series mice and MX Keys keyboards stopped working properly as a result of the oversight, with users unable to access their custom scrolling setup,...
With the release of iPadOS 26.2 and macOS Tahoe 26.2, Apple has improved the Wi-Fi speeds for select Macs and iPads that support Wi-Fi 6E. Updated Wi-Fi connectivity specifications are listed in Apple's platform deployment guide.
The M4 iPad Pro models, M3 iPad Air models, A17 Pro iPad mini, M2 to M5 MacBook Pro models, M2, M3, and M4 MacBook Air models, and other Wi-Fi 6E Macs and iPads now ...
OpenAI today announced the launch of ChatGPT Health, a dedicated section of ChatGPT where users can ask health-related questions completely separated from their main ChatGPT experience.
For more personalized responses, users can connect various health data services such as Apple Health, Function, MyFitnessPal, Weight Watchers, AllTrails, Instacart, and Peloton. Last month, MacRumors discovere...
Anker announced a new series of products at CES this week, and most of them will begin rolling out to customers later in January. A few of these devices, including the Nano Docking Station and 45W Nano Charger, have pre-order discounts on Anker's website, and we're also tracking big discounts in Anker's New Year's sale.
Note: MacRumors is an affiliate partner with some of these vendors. When...
