What to Do After Engaging With a Fake Tech Support Scam on a Chromebook

    Recovery steps if you called the number, granted remote access, or paid a fake support scammer from your Chromebook.

    JDCS
    By Jordan Dickson · Reviewed by CSG Security Engineers

    Updated June 2026 · 3 min read

    Step 1: Disconnect and Secure

    The first and most crucial step is to cut off any further interaction with the scammer. This prevents them from causing more harm or accessing your device.
    • If you are on the phone, simply hang up immediately. Do not engage in further conversation.
    • Close any open browser tabs or windows that the scammer may have directed you to or that are displaying scam messages.
    • Disconnect your Chromebook from the internet. You can do this by clicking the Wi-Fi symbol in the bottom-right corner of your screen (usually next to the time) and turning off Wi-Fi, or by physically unplugging your Ethernet cable if you are using one. This stops any remote access or data transfer.
    • If you gave the scammer any passwords, change them immediately from a different, secure device (e.g., a smartphone) if possible. Prioritise your email, banking, and social media passwords.

    Important

    Do not attempt to communicate with the scammer again once you have disconnected. They may try to re-establish contact.

    Step 2: Scan and Remove Malicious Extensions/Apps

    Scammers often trick you into installing malicious browser extensions or Android applications. Removing these can eliminate their persistent access.
    1. Open your Chrome browser. Click the three vertical dots in the top-right corner, go to More tools, then Extensions. Review all extensions for anything you don't recognise or didn't intentionally install.
    2. To remove an extension, click Remove next to it. If in doubt, disable an extension first by toggling the blue switch off. Look particularly for extensions related to 'remote access' or 'tech support'.
    3. For Android apps (if your Chromebook supports them), open the Launcher (the circle icon in the bottom-left corner), then find and open the Play Store app. Click your profile icon, then Manage apps & device, then Manage.
    4. Review the list of installed apps. If you see an app you did not install or that seems suspicious, tap on it and select Uninstall.
    5. After removing any suspicious extensions or apps, restart your Chromebook by clicking the time in the bottom-right corner and selecting the power icon.

    Tip

    Always be sceptical of any software or extension prompted for installation by an unsolicited message or call.

    Step 3: Clear Browsing Data and Reset Browser Settings

    Scammers might leave behind tracking cookies, change your browser's homepage, or alter other settings. Clearing this data helps restore your browser to its normal state.
    • Open your Chrome browser. Click the three vertical dots in the top-right corner, then go to Settings.
    • In the left-hand menu, click Privacy and security, then Clear browsing data.
    • Set the Time range to All time. Ensure that Browsing history, Cookies and other site data, and Cached images and files are all ticked. Then click Clear data.
    • Go back to Settings, then in the left-hand menu, click Reset settings. Select Restore settings to their original defaults and confirm. This will reset your homepage, new tab page, search engine, and disable extensions, but won't delete your bookmarks or passwords.

    Good to know

    Clearing browsing data can log you out of websites, so have your passwords ready to log back in.

    Step 4: Restore Your Chromebook (Powerwash)

    If the problem persists or you are still concerned about the security of your device, a full factory reset (known as a 'Powerwash' on Chromebooks) is the most thorough cleaning method. This will wipe all local data.
    1. Back up any important local files to Google Drive or an external storage device, as a Powerwash will delete everything stored on your Chromebook's internal drive.
    2. Click the time in the bottom-right corner of your screen, then select the Settings icon (the cog wheel).
    3. In the Settings menu, scroll down to the bottom and click on Advanced to expand more options.
    4. Under the 'Reset settings' section, click Powerwash, then Reset. Follow the on-screen prompts to confirm the Powerwash.
    5. Your Chromebook will restart and guide you through the initial setup process, just like when it was new. Sign in with your Google account.

    Important

    A Powerwash will erase all local data on your Chromebook, so backing up is essential before proceeding.

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    JD

    Written by

    Jordan Dickson

    Founder, CyberSecurityGuides

    Founder of CyberSecurityGuides, writing practical, jargon-free guides that help everyday people recover from and protect against online attacks.

    Reviewed by CSG Security Engineers

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