Is PerfecTab safe?
PerfecTab is low risk. A PerfecTab new-tab search routes through under-cover.info before results load, an intermediary URL with partner tags marking PerfecTab a monetized traffic source, then redirects to Yahoo Search (confirmed live, hsimp=yhs-perfecttab2).
Who publishes itKinner Lake Ltd. - 1 other listing from the same operator, none carrying a finding
Kinner Lake Ltd. - 1 other listing from the same operator, none carrying a finding
What this publisher told the store about itself, and the other listings that told it the same thing.
Same store account
1 other listing published from this account, 300k+ users between them, none of them carrying a finding.
Shared hosts - 1 hostname
Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.
AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.
Publishers can request a review.
Findings
Search queries routed through monetized intermediary before reaching Yahoo
A PerfecTab new-tab search routes through under-cover.info before results load, an intermediary URL with partner tags marking PerfecTab a monetized traffic source, then redirects to Yahoo Search (confirmed live, hsimp=yhs-perfecttab2).
What actually happens
You type a search query into the new-tab search box and press Enter.
The extension navigates your tab to under-cover.info with your raw search terms and partner monetization tags before any search engine is contacted.
Parameters p=yhs (Yahoo Hosted Search program) and b=perfecttab (partner branding) are appended to every request.
Captured request
302 redirect to https://uk.search.yahoo.com/yhs/search?hspart=flowsurf&hsimp=yhs-perfecttab2&p=a planted marker value
The code that does this
Search redirect in func.js
// Same code — not obfuscated. The redirect is plaintext in func.js lines 872-877.// p=yhs → Yahoo Hosted Search affiliate program// b=perfecttab → partner/branding tag that credits PerfecTab as the traffic source// The intermediary under-cover.info receives the raw query before the browser reaches any search engine.Data sent to under-cover.info on every search
- Your search termshow to reset my router password
The full text of whatever you typed into the search box is sent to the under-cover.info server before you reach a search engine.
- Partner tracking tagb=perfecttab
A fixed tag (b=perfecttab) identifies this extension as the traffic source, used for affiliate revenue attribution.
- Search program tagp=yhs
The p=yhs tag enrols the search in the Yahoo Hosted Search monetization program, linking the query to a revenue-sharing arrangement.
Hosts that receive your search terms
- under-cover.info
Intermediary that receives raw search terms plus partner tags; applies affiliate attribution and 302-redirects to Yahoo. Operator and data-retention policy not publicly disclosed.
- uk.search.yahoo.com
Final search results destination. Receives hsimp=yhs-perfecttab2 identifying PerfecTab as the referral source for Yahoo Hosted Search revenue.
What it can do
Permissions this extension asks for, as declared in version 1.0.3. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.
Read your physical location
geolocation
Store data in your browser
storage
Read the sites you visit most
topSites