# iOS bug that stops VPN apps from encrypting user traffic is still out there: How you can fix it (HT Tech) > Those at highest risk of this security flaw are people in countries where surveillance and civil rights abuses are common. # iOS bug that stops VPN apps from encrypting user traffic is still out there: How you can fix it ## Those at highest risk of this security flaw are people in countries where surveillance and civil rights abuses are common. Jun 04 2020, 07:00 IST ![Follow on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/follow-us-facebook.png) ![Follow on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/follow-us-facebook-hover.png) ![Share](https://images.hindustantimes.com/tech/static/revamp/images/png/Share.png) ![Share](https://images.hindustantimes.com/tech/static/revamp/images/png/Shareclicked.png) ![Share on WhatsApp](https://images.hindustantimes.com/tech/static/revamp/images/png/whatsapp.png) ![Share on WhatsApp](https://images.hindustantimes.com/tech/static/revamp/images/png/whatsapp-hover.png) ![Share on Twitter](https://images.hindustantimes.com/tech/static/revamp/images/png/twitter.png) ![Share on Twitter](https://images.hindustantimes.com/tech/static/revamp/images/png/twitter-hover.png) ![Share on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/facebook.png) ![Share on Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/facebook-hover.png) ![Bookmark](https://images.hindustantimes.com/tech/static/revamp/images/png/Bookmark.png) ![Bookmarked](https://images.hindustantimes.com/tech/static/revamp/images/png/Bookmarked.png) ![No VPN service can provide a workaround for this issue because iOS does not permit a VPN app to kill existing network connections.](https://images.hindustantimes.com/tech/img/2020/06/03/960x540/smartphone-1894723_1920_1591202013934_1591202024964.jpg) No VPN service can provide a workaround for this issue because iOS does not permit a VPN app to kill existing network connections. (Pixabay) ![Author Photo](https://images.hindustantimes.com/tech/static/revamp/images/png/HTTech-new-circle-logo.png) ### By HT TECH Apple recently released the iOS 13.5. The update came with a lot of fixes but not one for the vulnerability that users spotted on the iOS version 13.4. This vulnerability stopped all VPN apps on the device from encrypting user traffic. The latest update has not rectified this and the vulnerability still exists. iOS does not permit any VPN app to kill existing network connections and that means there is nothing VPN providers can do to resolve the situation, only Apple can fix it. According to estimates, millions of users around the world could be at risk because of this vulnerability, ProtonVPN explained in a blog. How the iOS VPN bypass vulnerability works Also read click here. Typically, when you connect to a virtual private network (VPN), the operating system of your device closes all existing Internet connections and then re-establishes them through the VPN tunnel. A member of the ProtonVPN community discovered that in iOS version 13.3.1, the operating system does not close existing connections. The issue also persisted in the 13.4 version of the iOS. Most connections are short-lived and will eventually be re-established through the VPN tunnel on their own. However, some are long-lasting and can remain open for minutes to hours outside the VPN tunnel. One prominent example in this case was Apple’s push notification service, which maintains a long-running connection between the device and Apple’s servers. But the problem could impact any app or service, such as instant messaging applications or web beacons. The VPN bypass vulnerability could result in users’ data being exposed if the affected connections are not encrypted themselves (though this would be unusual nowadays). The more common problem is IP leaks. An attacker could see the users’ IP address and the IP address of the servers they’re connecting to. Additionally, the server you connect to would be able to see your true IP address rather than that of the VPN server. Those at highest risk of this security flaw are people in countries where surveillance and civil rights abuses are common. Neither ProtonVPN nor any other VPN service can provide a workaround for this issue because iOS does not permit a VPN app to kill existing network connections. Till Apple fixes this, here’s how to mitigate the iOS VPN bypass vulnerability - Internet connections established after you connect to VPN are not affected. But connections that are already running when you connect to VPN may continue outside the VPN tunnel indefinitely. There is no way to guarantee that those connections will be closed at the moment you start a VPN connection. However, the following technique might be the most effective: 1. Connect to any VPN server. 2. Turn on airplane mode. This will kill all Internet connections and temporarily disconnect the VPN. 3. Turn off airplane mode and the VPN will reconnect, and your other connections should also reconnect inside the VPN tunnel, though it cannot be guaranteed a 100%. Alternatively, Apple recommends using an always-on VPN to mitigate this issue. This method requires using device management, so unfortunately it doesn’t mitigate the issue for third-party applications (like the VPN apps). This vulnerability was first reported by Luis, a security consultant and member of the Proton community. Catch all the Latest Tech News, Mobile News, Laptop News, Gaming news, Wearables News , How To News, also keep up with us on Whatsapp channel,Twitter, Facebook, Google News, and Instagram. For our latest videos, subscribe to our YouTube channel. 04 Jun, 07:00 IST ios vpn protonvpn ![HT Tech Awards](https://tech.hindustantimes.com/ht-tech-power-list-awards-2026/httech-awards-banner-new.webp) ### Related Stories 29 Sept 2026 71,591,201,672,602 NEXT ARTICLE BEGINS ![View all](https://images.hindustantimes.com/tech/static/revamp/images/png/view-all-icon.png) ## Tips & Tricks ![Ghibli-style art](https://images.hindustantimes.com/tech/img/2025/03/28/414x233/ChatGPT_Ghibli_style_images_1743161814450_1743161814596.jpg) ### How to turn your photos into Ghibli-style art with ChatGPT for free: Step-by-step guide ![How to create an invitation using iPhone’s new Apple Invites app- Step-by-step guide](https://images.hindustantimes.com/tech/img/2025/02/14/414x233/invites_1738728829564_1739543695649.png) ### How to create an invitation using iPhone’s new Apple Invites app- Step-by-step guide ![Apple TV app arrives on Android phones and tablets: What you get and how to install it](https://images.hindustantimes.com/tech/img/2025/02/13/414x233/unnamed_1739426557335_1739426567634.jpg) ### Apple TV app arrives on Android phones and tablets: What you get and how to install it ![Vodafone Idea OTT plans](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Vodafone Idea users can now stream 17 OTT apps with one subscription: Here's how ![Android data transfer methods](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### How to transfer data from one Android to another using Google backup, USB-C cable, and more ## Editor’s Pick ![iPhone 16e launched with A18 chip, Apple AI—bringing flagship power on a budget: Check specs, price](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### iPhone 16e launched in India: All details about the new budget mobile from Apple ![DeepSeek was founded in China with only a fraction of the budget of the top AI companies in the US.](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### DeepSeek AI: How it works, who’s behind it, how it’s different from ChatGPT, and its big US market impact explained ![iPhone 17 Air likely to get this feature that iPhone 17 Pro models may miss out on](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### iPhone 17 Air likely to get this feature that iPhone 17 Pro models may miss out on ![Google Whisk AI explained: How remixing works, availability, and how it differs from Gemini](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Google Whisk AI explained: How remixing works, availability, and how it differs from Gemini ![iOS 18.4 beta arriving soon: Know why it is the biggest iPhone update](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### iOS 18.4 beta arriving soon: Know why it is the biggest iPhone update ## Trending Stories ![Airtel 5G SIM card will now be delivered in 10 minutes with Blinkit- How to order](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Airtel 5G SIM card will now be delivered in 10 minutes with Blinkit- How to order ![Infinix Note 50s 5G+](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Infinix Note 50s 5G+ set to launch in India with 64MP camera and MediaTek Dimensity 7300 SoC ![Xiaomi X Pro QLED Series sale starts in India: Check price, availability, and more](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Xiaomi X Pro QLED Series sale starts in India: Check price, availability, and more ![Apple Intelligence AI training](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Apple plans to train AI using your on-device data without accessing personal content or emails: Report ![CMF Buds 2](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### CMF Buds 2 key features and price revealed ahead of April 28 launch: Details inside keep up with tech ![Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/tech-facebook.png) ![Twitter](https://images.hindustantimes.com/tech/static/revamp/images/png/tech-twitter.png) ![WhatsApp](https://images.hindustantimes.com/tech/static/revamp/images/png/tech-whatsApp.png) ![Facebook](https://images.hindustantimes.com/tech/static/revamp/images/png/tech-facebook.png) ## Gaming ![Check out these five gaming monitors under ₹20,000,](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Top 5 gaming monitors under ₹20000 you should consider ![gaming consoles](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Grab gaming consoles at discounted rates during Amazon Great Indian Festival: Up to 72% off ![Pokémon GO Wild Area 2025](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Pokémon GO Wild Area 2025 to bring Grimmsnarl family, Shiny Hatenna, and global challenges ![Shade Silver](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Shade Silver free on Steam for a limited time: Here’s how to get it ![Call of duty](https://images.hindustantimes.com/tech/static/revamp/images/png/ht-tech-bg-img-90-66.png) ### Call of Duty: Black Ops 7 skips Switch 2 at launch, release date and price leak ![View all](https://images.hindustantimes.com/tech/static/revamp/images/png/view-all-icon.png) ## Trending News ### Airtel 5G SIM card will now be delivered in 10 minutes with Blinkit- How to order ![Airtel 5G SIM card will now be delivered in 10 minutes with Blinkit- How to order](https://images.livemint.com/static/static/1x1_img.gif) ### Infinix Note 50s 5G+ set to launch in India with 64MP camera and MediaTek Dimensity 7300 SoC ![Infinix Note 50s 5G+](https://images.livemint.com/static/static/1x1_img.gif) ### Xiaomi X Pro QLED Series sale starts in India: Check price, availability, and more ![Xiaomi X Pro QLED Series sale starts in India: Check price, availability, and more](https://images.livemint.com/static/static/1x1_img.gif) ### Apple plans to train AI using your on-device data without accessing personal content or emails: Report ![Apple Intelligence AI training](https://images.livemint.com/static/static/1x1_img.gif) ### CMF Buds 2 key features and price revealed ahead of April 28 launch: Details inside ![CMF Buds 2](https://images.livemint.com/static/static/1x1_img.gif) ## Trending Gadgets Mobiles Laptops Tablets ![HT Tech](https://images.hindustantimes.com/tech/static/revamp/images/png/HT_tech-new.gif) - https://tech.hindustantimes.com/tech/news/an-ios-bug-is-stopping-vpn-apps-from-encrypting-traffic-71591201672602.html