Top Risks

• THREAT FEED: extension ID independently confirmed malicious by TPCI chrome-mal-ids — Basketball Cursor - Custom Sports Game Cursor for Chrome [adware] + malext.io malicious_extension_sentry (+2.5, capped).
• Uninstall URL hijack routes through Google redirect to tabplugins.com — classic traffic monetization pattern.
• Install URL hijack opens third-party page on install with UTM campaign tracking.
• scripting + *://*/* grants JS injection on every site despite trivial stated function.
• Privacy policy admits third-party data sharing without data retention disclosure.

Evidence

• uninstall_url_hijack manifest setUninstallURL targets google.com redirect → tabplugins.com/cursors/ — monetization fingerprint.
• install_url_hijack manifest onInstalled opens tabplugins.com with utm_campaign=cursors — install traffic capture.
• host_permissions_broad manifest host_permissions *://*/* combined with scripting on a cursor extension — scope mismatch.
• small_install_high_perm store 213 installs but HIGH-tier host+scripting permissions — tail attack surface.
• privacy_third_party_sharing api Policy fetched; scope_extension=true but third_party_sharing=true, retention=false.
• dom_sink_innerhtml crx innerHTML assignment in main.4964ab1e.js; no CSP present to mitigate DOM-XSS.
• verified_publisher store tabplugins.com verified publisher; resolves=true, not throwaway — partial trust credit.
• no_developer_name store developer_name field empty in listing — minor accountability gap.
• threat_feed_membership api Extension ID listed by TPCI chrome-mal-ids — Basketball Cursor - Custom Sports Game Cursor for Chrome [adware] + malext.io malicious_extension_sentry; score 3.68 -> 6.18 (+2.5 cap 2.5).

Permissions Breakdown

• storage low Stores cursor preferences locally; low risk.
• unlimitedStorage low Extends storage quota; minor risk uplift only.
• scripting medium Allows JS injection into pages; medium risk on its own.
• *://*/* high Broad host access — scripting+host permits read/write on every site.

Pillar Scores

Bookkeeping