How do I know if my site is hacked?


Why do sites get hacked? Hackers have
different motives for compromising a website
, and hack attacks can be very
different, so they are not always easily detected. Here are some tips which will
help you in detecting hacked sites!

  • Getting started:

    Start with our guide “How do I know if my
    site is hacked?” if you’ve received a security alert from Google or another
    party. This
    guide
    will walk you through basic steps to check for any signs of
    compromises on your site.

  • Understand the alert on Google Search:

    At Google, we have
    different processes to deal with hacking scenarios. Scanning tools will often
    detect malware, but they can miss some spamming hacks. A clean verdict from Safe
    Browsing does not mean that you haven’t been hacked to distribute spam.

    • If you ever see “This site may be
      hacked”,
      your site may have been hacked to display spam. Essentially, your
      site has been hijacked to serve some free advertising.
    • If you see
      “This site may harm your computer”
      beneath the site URL then we think the
      site you’re about to visit might allow programs to install malicious software on
      your computer.
    • If you see a big red screen before your site, that can mean a variety of things:
      • If you see “The site ahead contains malware”, Google has detected that
        your site distributes malware.
      • If you see “The site ahead contains harmful programs”, then the site has
        been flagged for distributing unwanted
        software
        .
      • “Deceptive site ahead” warnings indicate that your site may be serving phishing or
        social engineering
        . Your site could have been hacked to do any of these
        things.
  • Malvertising vs Hack:

    Malvertising happens when your site
    loads a bad ad. It may make it seem as though your site has been hacked, perhaps
    by redirecting your visitors, but in fact is just an ad behaving badly.

  • Open redirects: check if your site is enabling open redirects

    Hackers might want to take advantage of a good site to mask their
    URLs. One way they do this is by using open redirects, which allow them to use
    your site to redirect users to any URL of their choice. You can read
    more here
    !

  • Mobile check: make sure to view your site from a mobile browser in
    incognito mode. Check for bad mobile ad networks.

    Sometimes bad
    content like ads or other third-party elements unknowingly
    redirect mobile users
    . This behavior can easily escape detection because
    it’s only visible from certain browsers. Be sure to check that the mobile and
    desktop versions of your site show the same content.

  • Use Search Console and get message:

    Search Console is a
    tool that Google uses to communicate with you about your website. It also
    includes many other tools that can help you improve and manage your website.
    Make sure you have your site verified in
    Search Console
    even if you aren’t a primary developer on your site. The
    alerts and messages in Search Console will let you know if Google has detected
    any critical errors on your site.

If you’re still unable to find any signs of a hack, ask a security expert or
post on our
Webmaster Help Forums
for a second look.

The #NoHacked campaign will run for the next 3 weeks. Follow us on our G+ and Twitter channels or look out for the
content in this blog as we will be posting summary for each week right here at
the beginning of each week! Stay safe meanwhile!

Last week #NoHacked is back on our G+ and Twitter channels! #NoHacked is our
social campaign which aims to bring awareness about hacking attacks and offer
tips on how to keep your sites safe from hackers. This time we would like to
start sharing content from #NoHacked campaign on this blog in your local
language!

Why do sites get hacked? Hackers have
different motives for compromising a website
, and hack attacks can be very
different, so they are not always easily detected. Here are some tips which will
help you in detecting hacked sites!

  • Getting started:

    Start with our guide “How do I know if my
    site is hacked?” if you’ve received a security alert from Google or another
    party. This
    guide
    will walk you through basic steps to check for any signs of
    compromises on your site.

  • Understand the alert on Google Search:

    At Google, we have
    different processes to deal with hacking scenarios. Scanning tools will often
    detect malware, but they can miss some spamming hacks. A clean verdict from Safe
    Browsing does not mean that you haven’t been hacked to distribute spam.

    • If you ever see “This site may be
      hacked”,
      your site may have been hacked to display spam. Essentially, your
      site has been hijacked to serve some free advertising.
    • If you see
      “This site may harm your computer”
      beneath the site URL then we think the
      site you’re about to visit might allow programs to install malicious software on
      your computer.
    • If you see a big red screen before your site, that can mean a variety of things:
      • If you see “The site ahead contains malware”, Google has detected that
        your site distributes malware.
      • If you see “The site ahead contains harmful programs”, then the site has
        been flagged for distributing unwanted
        software
        .
      • “Deceptive site ahead” warnings indicate that your site may be serving phishing or
        social engineering
        . Your site could have been hacked to do any of these
        things.
  • Malvertising vs Hack:

    Malvertising happens when your site
    loads a bad ad. It may make it seem as though your site has been hacked, perhaps
    by redirecting your visitors, but in fact is just an ad behaving badly.

  • Open redirects: check if your site is enabling open redirects

    Hackers might want to take advantage of a good site to mask their
    URLs. One way they do this is by using open redirects, which allow them to use
    your site to redirect users to any URL of their choice. You can read
    more here
    !

  • Mobile check: make sure to view your site from a mobile browser in
    incognito mode. Check for bad mobile ad networks.

    Sometimes bad
    content like ads or other third-party elements unknowingly
    redirect mobile users
    . This behavior can easily escape detection because
    it’s only visible from certain browsers. Be sure to check that the mobile and
    desktop versions of your site show the same content.

  • Use Search Console and get message:

    Search Console is a
    tool that Google uses to communicate with you about your website. It also
    includes many other tools that can help you improve and manage your website.
    Make sure you have your site verified in
    Search Console
    even if you aren’t a primary developer on your site. The
    alerts and messages in Search Console will let you know if Google has detected
    any critical errors on your site.

If you’re still unable to find any signs of a hack, ask a security expert or
post on our
Webmaster Help Forums
for a second look.

The #NoHacked campaign will run for the next 3 weeks. Follow us on our G+ and Twitter channels or look out for the
content in this blog as we will be posting summary for each week right here at
the beginning of each week! Stay safe meanwhile!




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