Repair duplicate writes, conflicting retries and authorization failures in a bounded API exercise, then run the same contract tests locally.
Muhammad Azhar
Understand the web. Build with care.
Practical guides to privacy, security and your next web project. Try the examples in our Developer Lab.
71 guides
Compare an overbroad policy with a constrained solution, inspect nonce and report-only behavior, then prepare a real-browser rollout checklist.
Muhammad Azhar
Test large integers, duplicate keys and escaped JSON Pointers against an explicit lossless-formatting contract.
Muhammad Azhar
Build a readable workshop page with semantic HTML, flexible CSS and keyboard checks, then test a small change in the Developer Lab.
Muhammad Azhar
Define requests, responses and failure states for a lesson service, then explore the same ideas in a simulated HTTP workbench.
Muhammad Azhar
Use books, physical copies and loans to learn keys, constraints and transactions before adding more tables to a first SQL project.
Muhammad Azhar
Turn a reading-list feature into a small set of meaningful tests, including empty input, server failure and a reliable retry path.
Muhammad Azhar
Prepare a small event app for deployment by separating configuration, protecting credentials and rehearsing a rollback in a test environment.
Muhammad Azhar
Use a repair-booking app to compare deployment boundaries, data ownership and failure handling before splitting a small backend into services.
Muhammad Azhar
Audit a fictional support-ticket dataset for missing values, duplicate records and target leakage before trusting a model score.
Muhammad Azhar
Check use rights, quotas, authentication and browser access before building a weather widget around an API advertised as free.
Muhammad Azhar
Understand how passkeys replace shared secrets, resist phishing and change account recovery before switching your important logins.
Muhammad Azhar
A lost phone does not always mean a lost passkey. Learn where passkeys may be stored and how to prepare recovery before an emergency.
Muhammad Azhar
Choose an MFA method by understanding phishing resistance, recovery, device loss and the real weaknesses of SMS and approval prompts.
Muhammad Azhar
Repeated login approvals are not an annoyance to dismiss. Learn how MFA push bombing works and what to do before one prompt succeeds.
Muhammad Azhar
MFA protects login, but stolen session cookies can preserve access afterward. Learn how session hijacking happens and how to respond.
Muhammad Azhar
Move from reused passwords to a password manager safely, including the master password, MFA, recovery kit and first accounts to migrate.
Muhammad Azhar
Build a recovery plan for email, passkeys, MFA and lost devices before a forgotten password or stolen phone becomes a crisis.
Muhammad Azhar
Recover a compromised email account in the correct order: clean device, sessions, forwarding rules, recovery details and dependent accounts.
Muhammad Azhar
A sudden loss of mobile service can signal SIM-swap fraud. Learn the warning signs, containment order and account protections that help.
Muhammad Azhar
Connected apps can retain access after you stop using them. Learn how to review OAuth permissions and revoke access without breaking work.
Muhammad Azhar
QR codes hide their destination until scanned. Learn how quishing messages steal logins and how to inspect a request without trusting it.
Muhammad Azhar
Some fake CAPTCHA pages tell visitors to paste a command that installs malware. Learn the warning signs and the safe response.
Muhammad Azhar
A convincing family voice can be generated from a short recording. Use a separate contact route and a family verification phrase before paying.
Muhammad Azhar
Polished video is not independent evidence. Check the original account, claim, date and trusted reporting before acting on a viral clip.
Muhammad Azhar
Fake delivery texts create urgency around a parcel and request a small fee or address update. Verify it through the seller or carrier directly.
Muhammad Azhar
Unexpected pop-ups and calls may impersonate Microsoft, Apple or an ISP. Learn the requests legitimate support should never make.
Muhammad Azhar
A surprise calendar event can carry fake renewal notices and support links. Verify the account directly and avoid interacting with the invitation.
Muhammad Azhar
Remote-job scams use fast interviews, fake checks and equipment purchases. Verify the company, recruiter and payment process before providing data.
Muhammad Azhar
Fake livestreams and impersonated accounts promise doubled cryptocurrency. Learn why blockchain transactions make recovery difficult and how to verify claims.
Muhammad Azhar
Inspect the visible domain, decode redirects and verify the claimed service without visiting a suspicious link on your everyday device.
Muhammad Azhar
Learn how websites combine browser signals into a probabilistic identifier and why random privacy tweaks can make a device more unusual.
Muhammad Azhar
Understand first-party and third-party cookies, cross-site tracking and what can still identify a user after third-party cookies are blocked.
Muhammad Azhar
DNS over HTTPS encrypts resolver queries but does not hide every destination or replace HTTPS, a VPN or safe browsing decisions.
Muhammad Azhar
WebRTC needs network candidates for calls, but browser privacy changes have reduced local-address exposure. Learn what to test before disabling it.
Muhammad Azhar
An extension can read pages, change searches or capture data depending on its permissions. Use this checklist before installing or keeping one.
Muhammad Azhar
Browser profiles separate cookies, history and extensions. Learn where that separation helps and where accounts and networks still connect activity.
Muhammad Azhar
Private windows and guest profiles both reduce local traces, but they start from different account and browser states.
Muhammad Azhar
Clearing cache fixes stale files; clearing cookies resets sessions and preferences. Learn which action matches the browser problem.
Muhammad Azhar
Review which websites can use the camera, microphone, location, notifications and clipboard, then remove access that no longer has a purpose.
Muhammad Azhar
Find people-search listings, use official opt-out processes and keep records so removed personal information does not quietly return.
Muhammad Azhar
A certificate warning means the browser could not verify the encrypted connection. Learn when to stop and how to diagnose without bypassing it.
Muhammad Azhar
DNS filtering can block malware and phishing domains before a connection begins. Learn its strengths, false positives and privacy trade-offs.
Muhammad Azhar
Encrypted DNS protects resolver queries; a VPN creates a broader tunnel. Learn why one does not automatically replace the other.
Muhammad Azhar
A VPN kill switch blocks traffic when the tunnel fails. Learn what it covers, how to test it and why sleep and network changes matter.
Muhammad Azhar
Split tunneling sends selected traffic outside a VPN. Learn when that improves performance and when it weakens a security boundary.
Muhammad Azhar
Private IPs identify devices inside a local network; public IPs route internet responses. See how NAT connects the two.
Muhammad Azhar
CGNAT lets many customers share public IPv4 addresses. Learn how to recognize it and why inbound hosting and logs become harder.
Muhammad Azhar
A reverse proxy accepts client traffic in front of application servers. Learn how it supports TLS, caching, routing and load balancing.
Muhammad Azhar
A forward proxy makes requests for clients. Learn how organizations use it for routing, filtering, caching and controlled internet access.
Muhammad Azhar
Proxy caches reuse eligible responses to reduce latency and origin load. Learn cache keys, freshness and privacy mistakes to avoid.
Muhammad Azhar
Security headers tell browsers how to handle content, framing, transport and referrers. Start with controls you can test without breaking the site.
Muhammad Azhar
CSP reduces the impact of injected content, but copied policies often break legitimate scripts. Learn an inventory-first rollout.
Muhammad Azhar
HSTS tells browsers to use HTTPS for future visits. Learn max-age, subdomains, preload risk and a staged deployment plan.
Muhammad Azhar
SameSite controls cross-site cookie sending and helps reduce CSRF. Learn Lax, Strict, None and the Secure requirement.
Muhammad Azhar
CSRF makes an authenticated browser send an unwanted request. Use SameSite, tokens and origin checks as complementary controls.
Muhammad Azhar
Cross-site scripting begins when untrusted data becomes executable content. Learn contextual encoding, safe DOM APIs and CSP defence in depth.
Muhammad Azhar
Login rate limits must resist password attacks without creating an easy denial of service. Combine account, IP and risk signals.
Muhammad Azhar
A successful backup job does not prove that files, databases and keys can be restored. Use a small, repeatable recovery test.
Muhammad Azhar
Protect WordPress administration with updates, least privilege, strong authentication, backups and careful plugin management.
Muhammad Azhar
Unexpected redirects, injected pages and unknown administrators can signal compromise. Preserve evidence and contain before rebuilding.
Muhammad Azhar
A clear explanation of how a web proxy routes browser requests, changes the IP seen by a destination, and differs from a VPN.
Muhammad Azhar
Compare browser proxies and VPNs by traffic coverage, encryption and operator trust. Both can change the source IP seen by destinations for traffic they carry.
Muhammad Azhar
Online privacy requires more than hiding an IP address. Learn how HTTPS, browser settings, account choices, proxies and VPNs affect different risks.
Muhammad Azhar
A practical explanation of location-based access rules, why services use them, how IP geolocation works, and which legitimate options users have.
Muhammad Azhar
A practical guide to tracking, fingerprinting, data brokers, breaches and the privacy controls that make a measurable difference.
Muhammad Azhar
Learn why managed networks filter websites, how DNS and security gateways apply policy, and what to do when a legitimate page is blocked by mistake.
Muhammad Azhar
A practical security baseline for passwords, multifactor authentication, phishing, updates, backups and account recovery.
Muhammad Azhar
Learn which details a public IP can expose, why location estimates can be wrong, and where proxies and VPNs fit into a broader privacy plan.
Muhammad Azhar
Public Wi-Fi is convenient but risky. Learn the real threats on open networks and the practical steps that reduce exposure when you connect away from home.
Muhammad Azhar
HTTPS underpins secure web sessions. This guide explains what it protects, how TLS works, and why encryption still matters even when you use proxies or VPNs.
Muhammad Azhar