[Great Tool] Comet Browser: The AI Tool Everyone’s Talking About (and Why It Matters)

Introduction

 

AI tools are evolving at lightning speed and Comet Browser has suddenly become one of the most talked-about innovations this month

 

In just seven days, it gained over 5,000 searches in Australia, signaling huge curiosity and early adoption.

 

At Glinteco, we test emerging AI tools every day to understand not only what they can do but also where they break.

 

Comet is powerful and promising, but it also raises serious privacy, security, and accuracy concerns that early users need to understand.

 

What Is Comet Browser?

 

Comet is an AI-powered browser developed by Perplexity, designed to integrate an AI assistant directly into your browsing flow.

 

Unlike ChatGPT or Gemini, which sit outside your browser, Comet lets you:

 

• Summarize pages in-context (which Gemini is doing great now)
   

• Ask questions about what you’re reading
   

• Execute simple actions (e.g., follow links, extract text, fill forms)
   

• Use agentic automation, where the AI can browse and act on its own

 

It’s built on Chromium, so existing extensions generally work but it introduces a new layer of autonomy that makes it both exciting and risky.

 

The Dark Side of AI Browsing: Issues You Might Encounter

 

While Comet’s concept is revolutionary, real users and security researchers are discovering three major areas of concern: Privacy, Security, and Accuracy

 

1. Privacy: Who Sees What You See?

 

When your browser “thinks” for you, it also sees everything you see and that creates new data exposure risks.

 

Potential Privacy Risks

 

1. Unintended Data Sharing

   Comet’s AI model may process page content including private dashboards, emails, or client data through Perplexity’s servers for analysis.

   If you’re logged into business tools (like Slack, Gmail, or CRMs), sensitive text snippets could unintentionally be sent for processing.
    

2. Session Context Leakage

   Because Comet keeps contextual awareness across tabs, it can “connect” information between sites which could expose private data if boundaries blur.
    

3. Unclear Data Retention Policies

   Perplexity’s documentation doesn’t yet clarify how long data is stored or whether summaries and query logs are used to train future models.
    

4. Browser Permissions Overreach

   To function, Comet may request higher-than-usual permissions. If mishandled, extensions or malicious scripts could piggyback on its access.

 

Real-World Example

 

A user on X reported that Comet attempted to summarize a private Notion document, exposing internal text in its AI panel - a reminder that “AI context” can sometimes ignore what’s private.

 

Glinteco’s stance:

Our team recommends using tools like Comet only in sandboxed browsers when handling non-sensitive content, and implementing clear AI governance policies for corporate environments.

 

2. Security: When the AI Starts “Clicking” for You

 

Autonomous browsing brings automation and also attack surfaces.

 

Major Security Vulnerabilities

 

1. Prompt Injection Attacks

   Researchers at Brave demonstrated that malicious websites can hide invisible text (a prompt injection) to trick Comet’s AI into executing unsafe actions like sending credentials or visiting phishing pages.
    

2. Phishing and Code Injection

   A recent Tom’s Hardware report highlighted how Comet could unknowingly execute malicious JavaScript embedded in AI-generated summaries.
    

3. Over-trusting AI Actions

   Because Comet visually mimics “human” browsing, users might assume its clicks are safe but without sandboxing, an AI mis-click could open attack vectors or compromise login sessions.
    

4. Cross-Site Confusion

   When multiple tabs are open, Comet may carry context (like a password prompt or API key) from one domain to another. This is a potential privacy disaster.

 

Glinteco insight:

 

As a system operations and AI integration company, we continuously test AI automation under security constraints.

In environments with sensitive data (finance, healthcare, or government), AI browsers like Comet should never be used without strict containerization and logging.

 

3. Accuracy: Smart, But Not Always Right

 

The biggest misconception users have is that AI browsers understand the web.

 

In reality, they interpret it and that interpretation can go wrong.

 

Common Accuracy Problems

 

1. Surface-Level Summaries

   Comet often summarizes visible content but misses dynamic or hidden sections (like tabbed content, collapsible text, or scripts).

   Result: incomplete or misleading conclusions.
    

2. Context Drift

   The AI sometimes mixes information from multiple tabs or previous sessions producing responses that sound coherent but are contextually wrong.
    

3. Source Hallucination

   In user tests, Comet occasionally invented data points or URLs when summarizing long research pages - a classic LLM hallucination issue.
    

4. Citation Gaps

   Unlike Perplexity’s core search app (which shows sources), Comet’s in-browser answers don’t always cite their references, making it hard to verify truthfulness.
    

5. Outdated Model Context

   If the AI model hasn’t refreshed its world knowledge, it might give answers that were correct months ago but outdated today.

 

Our recommendation:

 

Always cross-verify Comet’s outputs with primary sources. In critical research or compliance work, pair AI summarization with human validation pipelines something we build into all our client systems.

 

How to Use Comet Browser Safely and Effectively

 

Here’s how we suggest experimenting with Comet responsibly:

 

Best Practice	Description
Use separate accounts	Don’t browse client or personal data on AI browsers.
Sandbox sessions	Run Comet inside a VM or isolated user profile.
Disable auto actions	Let the AI summarize, not click or submit forms automatically.
Verify all outputs	Always fact-check summaries or extracted data.
Read permissions carefully	Review every permission request before installation.
Keep logs	Maintain browser activity logs for transparency.

 

How Companies Like Ours Are Preparing for the AI Browser Era

 

The rise of Comet signals a new phase: AI as a browsing agent

 

At Glinteco, this aligns with our vision of integrating intelligent automation and secure AI workflows into enterprise systems.

 

We’re currently exploring:

 

• Safe automation layers: connecting AI browsers to enterprise tools with controlled APIs
   

• Security monitoring pipelines: detecting abnormal AI actions in real-time
   

• Accuracy scoring: validating AI output against trusted datasets
   

• Custom AI plug-ins: integrating domain-specific “skills” securely into browsers like Comet

 

Because in the future, browsers won’t just display information they’ll decide what to do with it.

 

And that requires a whole new class of AI governance and integration strategies exactly where we help our clients prepare.

 

Final Thoughts

 

Comet Browser is an exciting leap forward as a glimpse into a future where AI tools work beside us, not apart from us.

 

But with that power comes risk: privacy leaks, data exposure, and unreliable accuracy can easily offset convenience.

 

If you’re curious, explore it but explore intelligently.

 

The companies that win in the next decade won’t be those who use every AI tool as they’ll be those who use AI responsibly, securely, and strategically.