TWO-STEP VERIFICATION Two-Step Verification என்பது user account-க்கு login செய்யும்போது ஒரு verification ste……
TWO-STEP VERIFICATION
Two-Step Verification is a security process in which a user must successfully complete two verification steps before gaining access to an account or system. தமிழில்: ஒரு user account-க்கு login செய்ய: Password enter செய்வது அதற்குப் பிறகு …
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Definition
Two-Step Verification is a security process in which a user must successfully complete two verification steps……
Simple Explanation
Normal login: Username ↓ Password ↓ Login Two-Step Verification……
Explanation
Why two-step verification is needed
Suppose attacker password-ஐ steal செய்துவிட்டார். Without Two-Step Verification: Password Stolen ↓ Attacker L……
Flow
Basic flow
User ↓ Enter Username ↓ Enter Password ↓ Step 1 Verified ↓ Seco……
Explanation
Step 1
First step commonly: Password Pass……
Explanation
Step 2
Second step different forms-ல் இருக்கலாம்: SMS OTP Email co……
Real Life Example
Example
Bank account login: Step 1 Username + Pass……
Explanation
Otp
OTP = One-Time Password ஒரு குறிப்பிட்ட login அல்லது transactio……
Flow
Flow with otp
User Enters Password ↓ Password Correct ↓ OTP……
Explanation
Authenticator app
Authenticator app time-based verification codes generate செய்யலாம……
Explanation
Totp
TOTP = Time-Based One-Time Password Authenticator applications-ல்……
Explanation
Push notification
Login attempt வந்தால் registered device-க்கு notificatio……
Explanation
Security key
Physical hardware device மூலம் verification செய்யலாம். Password ↓ Insert / ……
Explanation
Biometric verification
Second step-ஆக: Fingerprint Face reco……
Explanation
Backup codes
Two-Step Verification setup செய்யும்போது சில services backup/recovery co……
Important
Backup codes: Secret-ஆக வைத்திருக்க வேண்டும் Publicly share செய்யக்கூடாது Secure location-ல் store செய்ய வேண்……
Explanation
Authentication factors
Something You Know Password PIN Something You H……
Real Life Example
Example 1
Password + PIN இவை இரண்டு steps. ஆனால் இரண்டும்: S……
Real Life Example
Example 2
Password + Security Key Password: Something you know Securi……
Real Life Example
Example 3
Password + Fingerprint Passwo……
Explanation
Memory
Two-Step = Two Steps Two-Fact……
Explanation
Two-step verification methods
Common methods: SMS OTP Email OTP Authent……
Explanation
1. sms otp
Code registered mobile number-க்கு SMS மூலம் வரும். Password ↓ SM……
Explanation
2. email otp
Registered email address-க்கு verification code அனுப்பப்படும். Pa……
Explanation
3. authenticator app
Phone-ல் locally generated time-based codes பயன்படுத்துகிறது. Advanta……
Explanation
4. push authentication
User device-க்கு login approval request……
Important
Unknown login request வந்தால்……
Explanation
5. hardware security key
Physical authentication device. Advantages: Strong p……
Explanation
6. biometrics
User biological characteristic verify செய்யப்படுகிறது. Examples: ……
Flow
Two-step verification setup flow
Typical setup: Account Settings ↓ Security ↓ Enable Two-St……
Explanation
Login flow after enabled
Username ↓ Password ↓ Correct? / \ No ……
Explanation
Benefits
Two-Step Verification benefits: Password theft impact reduce செய்கிறது. Unauthorized login difficu……
Explanation
Limitations
Two-Step Verification 100% protection அல்ல. Possible risks: Phishing SIM-related attacks User approving fa……
Explanation
Phishing and two-step verification
Attacker fake login page உருவாக்கி: Password OTP இரண்டையும் கேட்கலா……
Explanation
Push fatigue
Repeated login approval notifications அனுப்பி user தவறாக approve செய்வதை attackers முயற்சிக்கலாம். Approve Lo……
Explanation
Secure second step preference
Generally stronger options: Hardware Security Key ↓ Authenticator / Strong Device-Ba……
Explanation
[TWO-STEP VERIFICATION vs MFA] MFA = Multi-Factor Auth……
Remember
True 2FA is a type of MFA.…
Explanation
Relationship
MFA | +-- 2FA | | | +-- Exactly Two Different Factors | +-- 3 or Mor……
Real Life Example
Real-life example
Suppose email account. Step 1 Password = ******** Cor……
Output
Result
Explanation
Authentication connection
Password authentication: Something You Know OTP/security key: Som……
Important
Important security rules
Two-Step Verification பயன்படுத்தும்போது: OTP share செய்யக்கூடாது. Unknown push requests approve செய்யக்கூடாது……
Common Mistake
Common error
Wrong Two-Step Verification என்றால் இர……
Explanation
Example
Password + OTP…
Common Mistake
Common error
Wrong OTP-ஐ bank/customer support கேட்டால் share செய்யலாம்.……
Common Mistake
Common error
Wrong Two-Step Verification and Two-Factor Authentication always exactly same. Correc……
Common Mistake
Common error
Wrong Password தெரிந்தால் Two-Step Verification bypass ஆகும்……
Memory Trick
P + S = Secure Login P - Password S - Se……
Explanation
Another memory
KHA K - Know H - Have A - Are Kn……
TRB Point
TRB / NET / SET examination-க்கு முக்கியமான points: Two-Step Verification Requires two verification stages. O……
Interview Point
Question
What is Two-Step Verification? Answer Two-Step Verification is a security m……
Interview Point
Interview question
What is the difference between Two-Step Verification and Two-Factor Authentication? Two-Step Verification r……
MCQ
Two-Step Verification require……
MCQ
OTP stands for:…
MCQ
A password belongs to:…
MCQ
A security key belongs to:…
MCQ
Fingerprint belongs to:…
MCQ
Which is a valid two-factor c……
MCQ
TOTP stands for:…
MCQ
Which method generates time-b……
MCQ
Backup codes are mainly used ……
MCQ
Which provides stronger prote……
MCQ
A user should do what with an……
MCQ
2FA means:…
Practice
Define Two-Step Verification. Why is Two-Step Verification needed? Explain Two-Step Verification flow. What i……
Summary
TWO-STEP VERIFICATION | ---------------- | | Step 1 Step 2 | | Password OTP / App / Key / Biometric \ / \ /……
Explanation
Short description
Two-Step Verification is a login security mechanism that requires two verification stages, such as a password……
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