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Privacy8 min read

Android Safety Core: What I Think About Constant Device Scanning

I came across a discussion about Android Safety Core constantly scanning devices. Here's my take on the privacy implications and how it affects ad blocking.

T

The AdBlock Mobile Team

December 24, 2025

I recently stumbled upon a fascinating discussion online about Android Safety Core, a system-level feature that apparently scans devices continuously. The original poster detailed how to find and potentially disable it within Android settings. This got me thinking about the broader implications for user privacy, especially in the context of ad blocking and mobile security.

Let's delve into what Android Safety Core is, what it does, and why it might be raising some eyebrows, and how these types of system-level functions affect our ability to control what data leaves our devices.

Understanding Android Safety Core

Android Safety Core is, ostensibly, a security feature designed to protect users from malware, phishing attempts, and other online threats. It operates by constantly scanning apps, files, and network activity for suspicious behavior. While the intention is undoubtedly to enhance security, the implementation raises some legitimate privacy concerns.

How It Works

  • Real-time Scanning: The core continuously monitors device activity in the background.
  • Threat Detection: It uses various methods to identify potential threats, including signature-based detection and behavioral analysis.
  • Data Collection: The process inevitably involves collecting and analyzing data about app usage, file access, and network traffic.
  • Reporting: Suspected threats are reported to Google for further analysis and potential action.

Potential Benefits

  • Enhanced Security: Proactive threat detection can help protect users from emerging malware and phishing attacks.
  • Improved App Safety: By scanning apps for malicious code, the feature can help prevent the installation of harmful software.
  • Reduced Risk of Data Breaches: Identifying and blocking malicious network activity can help prevent data breaches and protect sensitive information.

Privacy Concerns and Implications

While the security benefits are clear, the constant scanning raises serious privacy concerns:

Data Collection and Usage

The biggest concern is the extent of data collection. What data is being collected? How is it being stored? And how is it being used? While Google claims the data is anonymized and used solely for security purposes, the potential for misuse or abuse is always present. Imagine if this data were ever subpoenaed or leaked. It would create an incredibly detailed picture of a user's habits and activities.

Lack of Transparency

Another concern is the lack of transparency. Many users are unaware that Android Safety Core is running in the background and constantly scanning their devices. There is little information available about the specific data it collects or how it operates. This lack of transparency erodes trust and makes it difficult for users to make informed decisions about their privacy.

Potential for Bias

The algorithms used by Android Safety Core may be biased, leading to false positives and the misidentification of legitimate apps or activities as malicious. This could have serious consequences for developers and users alike.

Impact on Performance

Constant scanning can also impact device performance, especially on older or less powerful devices. The background activity consumes system resources, leading to slower performance and reduced battery life.

Ad Blocking and Android Safety Core

So, how does this relate to ad blocking? The constant scanning of network traffic could potentially interfere with ad blocking solutions that rely on DNS filtering or VPN-based blocking. If Android Safety Core identifies these solutions as suspicious, it could block or disable them, effectively undermining users' efforts to block ads and protect their privacy.

Interference with DNS Filtering

DNS filtering works by blocking requests to known ad servers. Android Safety Core could potentially interfere with this process by intercepting DNS requests and preventing them from being resolved. This would effectively bypass the ad blocking solution and allow ads to be displayed.

Disabling VPN-Based Blocking

VPN-based ad blocking works by routing all network traffic through a VPN server that filters out ads. Android Safety Core could potentially identify these VPN connections as suspicious and block them, effectively disabling the ad blocking solution. This would leave users vulnerable to ads and tracking.

Impact on Customization

Android's open nature has traditionally allowed for deep customization. Features like Safety Core, while intending to protect, simultaneously restrict what users can control about their own devices. This shift towards increased control by the OS vendor impacts the effectiveness and availability of third-party ad blocking solutions, as these solutions often rely on system-level modifications or VPN configurations.

Alternatives and Mitigation Strategies

Given these concerns, what can users do to mitigate the potential privacy risks and ensure effective ad blocking?

Review Privacy Settings

Take the time to review your Android privacy settings and disable any features that you are uncomfortable with. This may include disabling location services, limiting app permissions, and opting out of data collection.

Use a Privacy-Focused Browser

Consider using a privacy-focused browser like Brave or Firefox Focus, which offer built-in ad blocking and tracking protection. These browsers are designed to protect your privacy and prevent your data from being collected and shared.

Install a VPN

A VPN can help protect your privacy by encrypting your internet traffic and masking your IP address. This makes it more difficult for websites and advertisers to track your online activity. However, be sure to choose a reputable VPN provider with a strong privacy policy.

Use a DNS-Based Ad Blocker

As mentioned earlier, a DNS-based ad blocker can block ads at the network level, preventing them from being downloaded in the first place. This can help improve your browsing speed and reduce your data usage. While Safety Core might interfere, a well-configured DNS blocker can still provide a significant level of protection.

Consider De-Googling

For the truly privacy-conscious, consider switching to a custom ROM like LineageOS or GrapheneOS. These ROMs remove Google's proprietary apps and services, giving you greater control over your data and privacy. This is an advanced option, but it can provide the highest level of privacy and security.

The Importance of User Awareness and Control

The discussion around Android Safety Core highlights the importance of user awareness and control. Users need to be aware of the potential privacy risks associated with these types of features and have the ability to make informed decisions about whether or not to use them. Transparency is key.

Demanding Transparency from Google

Google needs to be more transparent about the data collected by Android Safety Core and how it is used. Users should have access to clear and concise information about the feature's operation and the potential privacy implications. This will help build trust and allow users to make informed decisions about their privacy.

Advocating for User Control

Users should have greater control over Android Safety Core. They should be able to disable the feature entirely or customize its settings to suit their individual needs and preferences. This would empower users to protect their privacy and ensure that their data is not being collected or used without their consent.

Supporting Open-Source Alternatives

Supporting open-source alternatives to Android can help promote greater user control and privacy. These ROMs are developed by independent communities and are not subject to the same corporate pressures as Google's Android. This allows them to prioritize user privacy and offer greater customization options.

What About iOS?

While this discussion focuses on Android, it's worth considering the situation on iOS. Apple also employs various security measures to protect users from malware and other threats. However, Apple generally takes a more privacy-focused approach, providing users with greater control over their data and privacy settings. Apple's App Tracking Transparency (ATT) feature, for example, requires apps to obtain user consent before tracking their activity across other apps and websites. This gives users greater control over their data and prevents them from being tracked without their knowledge.

Final Thoughts

The Android Safety Core discussion serves as a reminder of the ongoing tension between security and privacy. While security features are essential for protecting users from online threats, they should not come at the expense of user privacy. Transparency, user control, and open-source alternatives are crucial for ensuring that users can protect their privacy and make informed decisions about their data. As mobile users, we must remain vigilant and proactive in protecting our privacy in an increasingly connected world. By demanding transparency, advocating for user control, and supporting open-source alternatives, we can help ensure that our privacy is not sacrificed in the name of security. The constant scanning of devices, while potentially beneficial, should always be subject to scrutiny and user oversight.

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