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  1. GRC | ShieldsUP! — Internet Vulnerability Profiling

    Our weekly Security Now! audio podcast has covered every security issue you might have. These mp3 audio files are freely downloadable, and since we have transcripts of every podcast, you …

  2. GRC | ShieldsUP!! What's New

    Oct 6, 2003 · Unlike other security testing sites that require your security to be compromised through a download of active content or enabling web browser scripting, ShieldsUP! offers …

  3. GRC | Shields UP! -- Internet Connection Security Analysis

    May 28, 2010 · Your ShieldsUP! site easily sees my computer's IP address. Though I trust you, I figure that anyone else can see anything that you can. So how can I hide my IP address while …

  4. Home of Gibson Research Corporation

    ShieldsUP! Security Now! Click Here – for GRC's new DNS Benchmark v2 !! Steve Gibson's and Gibson Research Corporation's Web homepage.

  5. GRC | Gibson Research Corporation Home Page

    Dec 6, 2025 · Our free "Shoot The Messenger" utility furthers the security of Windows by quickly and easily shutting down the "Windows Messenger" server that should never have been …

  6. SHIELDS UP! - CISA

    As the nation’s cyber defense agency, CISA stands ready to help organizations prepare for, respond to, and mitigate the impact of cyberattacks. Organizations should report anomalous …

  7. ShieldsUP - Wikipedia

    The purpose of the utility is to alert the users of any ports that have been opened through their firewalls or through their NAT routers, which can be used by malicious users to take …