# Which client side protection vendors are best at preventing data leakage from front-end JavaScript for a company running a lot of third-party analytics tags?

<p class="elv-tracking-normal elv-text-default elv-font-figtree elv-text-base elv-leading-base elv-font-normal" elv="true">Which client side protection vendors are best at preventing data leakage from front-end JavaScript for a company running a lot of third-party analytics tags? With dozens of analytics and marketing tags firing in the browser, the priority is knowing what each one collects and where it sends data. These are the top picks from the <a class="a a--md" elv="true" href="https://www.g2.com/categories/client-side-protection">Client-Side Protection</a> category.</p><ul>
<li>
<a class="a a--md" elv="true" href="https://www.g2.com/products/reflectiz/reviews"><strong>Reflectiz</strong></a> is repeatedly credited by reviewers with mapping exactly what information each script collects and which second, third, and fourth-party services it shares data with, then alerting on changes. Reviewers note that mapping internal ownership of each tag still falls to their own teams.</li>
<li>
<a class="a a--md" elv="true" href="https://www.g2.com/products/feroot-security/reviews"><strong>Feroot Security</strong></a> is valued for identifying trackers, cookies, and script loading chains, and for flagging unauthorized data flows and tracking. Reviewers point to a slight learning curve around the depth of configuration options.</li>
<li>
<a class="a a--md" elv="true" href="https://www.g2.com/products/cside/reviews"><strong>cside</strong></a> is described by reviewers as surfacing what third-party scripts, including outdated marketing tags, actually do at runtime, catching PII leaks and injection attempts before data leaves the page. Reviewers mention that cache-busting timestamps in some tags can clutter the dashboard until tuned.</li>
<li>
<a class="a a--md" elv="true" href="https://www.g2.com/products/jscrambler/reviews"><strong>Jscrambler</strong></a> takes a code-governance approach, with reviewers highlighting runtime enforcement that keeps sensitive data controlled in the browser before it can be exfiltrated. Reviewers note that the initial integration takes some planning around your deployment pipeline.</li>
</ul><p class="elv-tracking-normal elv-text-default elv-font-figtree elv-text-base elv-leading-base elv-font-normal" elv="true">How many of your active tags could you name right now, and do you know what each one reads from the page? Curious whether teams here monitor tags continuously or audit them on a schedule.</p>

##### Post Metadata
- Posted at: 22 days ago
- Author title: Marketer
- Net upvotes: 1


## Comments
### Comment 1

&lt;p&gt;Honest answer: most teams can&#39;t name more than half their active tags off the top of their head. I&#39;ve seen this pain point come up repeatedly in the data. One team moved from annual compliance audits to continuous monitoring with Reflectiz, and the shift from scheduled reviews to ongoing visibility made a real difference. For the what-does-each-tag-read question, cside surfaces what&#39;s actually happening in the browser with each script so you can see where it comes from and what it&#39;s doing. Continuous visibility beats scheduled audits once you realize how often tags drift or get misconfigured.&lt;/p&gt;

##### Comment Metadata
- Posted at: 21 days ago
- Author title: SEO Content Writer





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