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Web Extensions Security — Browser extensions carry real permissions and real risk
SIRI Security assesses the security of browser web extensions — testing permissions, data handling, and update mechanisms that often carry more access and risk than teams realise.
62%Of cloud detections
70%Of malware detections
29.44LIncidents CERT-In handled
Why application-layer strategy is now board business
Live tracking · scroll to see every relevant change
Named standard
OWASP TOP 10
Application security governance and SDLC work is scoped against the current OWASP Top 10 and OWASP ASVS as the reference baseline.
Growing gap
62% CLOUD
Cloud misconfiguration and IAM exploitation account for 62% of detections in cloud environments (DSCI) — a growing share of what strategic AppSec work has to account for.
Effective
31 JUL 2026
RBI's 2026 Framework expects demonstrable application security governance, not testing bolted on at the end of a release cycle.
Baseline
70% MALWARE
Trojans and file infectors make up 70% of malware detections (Seqrite 2026) — relevant context for infra and integration threat analysis.
Baseline
6 HR WINDOW
CERT-In's notification window makes a defined security baseline and threat analysis a precondition for a fast, confident response.
A security baseline the whole organisation actually follows
What does Web Extensions Security assessment involve?
Browser extensions frequently request broad permissions — reading all page content, network interception, cross-origin access — that, if compromised or poorly secured, create serious risk. This risk applies both to extensions you build and those your organisation permits employees to use.
We assess extension code for vulnerabilities, review requested permissions against actual functional need, test data handling and communication security, and evaluate the update and distribution mechanism for tampering risk.
Security built into the SDLC beats security bolted onto it
62% of cloud detections trace to misconfiguration and IAM exploitation (DSCI) — a category strategic, governance-level AppSec work is designed to close earlier, before release, rather than after.
SIRI Security delivers Web Extensions Security to this standard directly — practitioner-led, documented, and connected to SIRI Law LLP's legal and regulatory response if a finding ever needs to go further.
What organisations get wrong
Four assumptions that leave application strategy underdeveloped
Strategic AppSec gaps rarely show up in a single release — they compound quietly across many.
01 — TIMING
“We'll add security once the product is stable”
Retrofitting security into an established SDLC costs materially more than building a minimum baseline in from the start.
02 — CADENCE
“Annual review is frequent enough”
A quarterly AppSec review catches drift a single annual pass consistently misses — architectures and dependencies change faster than yearly cycles account for.
03 — SCOPE
“Our core app is covered, so we're fine”
Browser extensions, third-party integrations, and infrastructure components carry their own attack surface that a core-app-only review skips entirely.
04 — MEASUREMENT
“We don't need a formal security score”
An internal benchmark like a structured security score gives the board a trackable number — without one, 'more secure' has no defensible baseline to measure against.
What Web Extensions Security covers
What's included, start to finish
Strategy and governance that gets built into how you ship, not reviewed after the fact.
01
Permission scope review
Requested permissions assessed against genuine functional necessity.
02
Extension code security testing
Vulnerability testing of the extension's own code, including content script isolation.
03
Data handling & transmission review
How the extension handles and transmits user data, and to where.
04
Update mechanism security
Whether the update and distribution channel could be a tampering vector.
05
Organisational extension policy support
Recommendations for governing which extensions employees are permitted to install.
Evidence, not guesswork
No formal AppSec strategy vs. ad hoc reviews vs. a SIRI-supported programme
The gap compounds quietly across releases until an audit or incident makes it visible all at once.
| Approach | No formal strategy | Ad hoc reviews | SIRI Web Extensions Security |
|---|---|---|---|
| Security baseline defined | No | Informal | Documented, enforced |
| Review cadence | None | Irregular | Quarterly or as scoped |
| Third-party/extension coverage | No | Rare | Included |
| Trackable security score | No | No | Included |
| SDLC integration | No | Partial | Built in |
Sources: OWASP Top 10 and OWASP ASVS; DSCI cloud detection data; RBI (Commercial Banks — Cybersecurity, Technology: Risk, Resilience and Assurance Framework) Directions, 2026; Seqrite 2026 threat report. Summarised for comparison.
Numbers every board should know
What strategic AppSec work is actually protecting against
62%
Of cloud detections
Trace to misconfiguration and IAM exploitation (DSCI).
70%
Of malware detections
Are trojans and file infectors (Seqrite 2026).
29.44L
Incidents CERT-In handled
In the latest reporting year — the backdrop strategic security investment is measured against.
6 HR
CERT-In notification window
The deadline a defined security baseline helps make achievable.
Why SIRI for Web Extensions Security specifically
Strategy set by the same team that tests it
The practitioners who define your security baseline are the same ones who test whether it actually holds.
01
Led directly by SIRI's Head of Cybersecurity
Vikram Rao, SIRI's Head of Cybersecurity, directs offensive security and incident response and leads CERT-In breach containment for enterprise clients.
02
Findings connected directly to legal exposure
SIRI Security runs under the same roof as SIRI Law LLP — when a finding carries real legal exposure, the engagement can be brought under attorney-client privilege from day one, not bolted on after the fact.
03
Governance built by SIRI's GRC and Compliance lead
Sneha Iyer, Associate Partner and Head of GRC and Compliance, has delivered ISO 27001, SOC 2, and SEBI CSCRF programmes across the client base this catalogue serves.
04
Built for RBI's specific application-security expectations
Baselines and review cadence are scoped to the standard RBI's 2026 Framework and SEBI's CSCRF expect, not a generic industry template.
Who this is built for
Organisations this strategic service is built for
Banks, NBFCs & insurers
Scaling engineering teams
SaaS companies shipping continuously
Organisations integrating third-party extensions
Boards wanting a trackable security score
How we work
From scoping to ongoing delivery
01
Current State Review
We review your current program, policies, and practices to establish an honest baseline.
Week 102
Framework & Roadmap Design
We design the specific framework, policy, or roadmap tailored to your organisation's scale and risk profile.
Weeks 2–303
Implementation Support
We support rollout and adoption, working alongside your team rather than handing over a document and leaving.
Week 4+04
Ongoing Governance
We help establish the ongoing governance and review cadence so the program stays current as your organisation evolves.
OngoingFrequently asked
Web Extensions Security, answered directly
Is this for extensions we build, or ones our employees install?
Both — we assess extensions your organisation develops and publishes, and can also review the risk of third-party extensions your policy allows employees to use.
Which browsers do you cover?
Chrome, Edge, and Firefox extension platforms, covering the current Manifest V3 model where relevant.
How long does this engagement take?
Typically 4 to 8 weeks depending on organisational scale and how much existing documentation there is to build from.
Do you help maintain this after the initial engagement?
Yes — we offer ongoing advisory and review services to keep the program current as your organisation and its risk profile evolve.
Build the baseline, then hold it
Scope Web Extensions Security.
Most engagements start with a current-state review before defining the baseline and review cadence.
Talk to SIRI Security: +91 79819 12046
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