Google’s latest move to strengthen network security and protect user privacy is a significant step forward in the ongoing battle against online tracking. The company has introduced Encrypted Client Hello (ECH) support in Android 17, which operates alongside private DNS to conceal profiling metadata from internet service providers and Wi-Fi operators.
This new feature encrypts the opening part of the Transport Layer Security (TLS) handshake that reveals the contacted hostname via Server Name Indication (SNI). Even if a connection is secure, ISPs and Wi-Fi operators can still see the destination website or service being accessed. This metadata can be collected for commercial profiling purposes, compromising user privacy.
Android users will benefit from ECH when browsing with compatible browsers such as Chrome 117 and later, or Firefox 119 and later. However, Android 17 incorporates this protection at the platform level, ensuring it is enabled by default for apps targeting the operating system. This means that most users won’t need to take any action to enable ECH, as long as their apps are using a compatible networking library.
Google’s announcement highlights the importance of ECH in protecting user privacy. “By encrypting the destination website name from the very start, ECH helps ensure that network providers and network snoopers can no longer easily see which websites or apps you are accessing.” In fact, Google has taken it a step further by introducing an additional feature called ECH GREASE, which sends a fake encrypted connection to servers that don’t support ECH. This makes real ECH connections less noticeable.
While the rollout of ECH is a significant improvement in network security and privacy, Google hasn’t stopped there. The company has also announced adjustments to Local Network Protection, requiring apps to obtain permission before scanning for or connecting to devices on the user’s local network. Additionally, Certificate Transparency will be enabled by default, making it more evident when forged certificates are used.
Another important change is that participating mobile operators will now be able to turn off 2G automatically for subscribers, reducing their exposure to SMS blasters and rogue base stations that can deliver malicious messages or capture sensitive traffic from nearby devices. This is a significant improvement in user security and privacy, particularly for those living in areas with poor network infrastructure.
In conclusion, Google’s latest move to strengthen Android security and protect user privacy is a welcome development. As the number of online threats continues to rise, it’s essential that we have robust measures in place to safeguard our personal data. By enabling ECH support and introducing other network protections, Google has taken an important step towards protecting its users from online tracking and profiling.
If you’re using Android 17 or later, you can rest assured that your browsing activities are more secure than ever. However, it’s essential to remember that no security measure is foolproof, and we must remain vigilant in our digital lives. By staying informed about the latest security threats and best practices, we can all contribute to a safer online environment for everyone.
Source: Bleeping Computer — 2026-08-27