It’s 2025—Why Are Banks Still Getting Authentication So Wrong?

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The article highlights the persistent issues with banking authentication systems, particularly the over-reliance on SMS-based two-factor authentication (2FA) and poor user experience design. Many banks still use outdated security practices that frustrate users while failing to provide robust protection against modern threats like SIM swapping and phishing attacks.

You Should Know:

1. Modern Authentication Alternatives to SMS 2FA:

 Linux command to generate TOTP tokens (Time-based One-Time Password)
oathtool --totp -b "YOUR_SECRET_KEY"

Windows equivalent using PowerShell
Add-Type -AssemblyName System.Security
$totp = New-Object System.Security.Cryptography.HMACSHA1
$totp.Key = [Text.Encoding]::UTF8.GetBytes("YOUR_SECRET_KEY")

2. Implementing WebAuthn for Passwordless Authentication:

// Sample WebAuthn registration code
navigator.credentials.create({
publicKey: {
challenge: new Uint8Array(32),
rp: { name: "Example Bank" },
user: {
id: new Uint8Array(16),
name: "[email protected]",
displayName: "User"
},
pubKeyCredParams: [{ type: "public-key", alg: -7 }],
timeout: 60000,
attestation: "direct"
}
}).then((newCredential) => {
// Handle new credential
});

3. Detecting SIM Swap Attempts:

 Python script to monitor carrier account changes
import requests
from bs4 import BeautifulSoup

def check_sim_change(phone_number):
 This would require carrier-specific API integration
 Placeholder for actual implementation
return False

4. Secure Session Management Commands:

-- SQL command to review active sessions
SELECT  FROM user_sessions WHERE last_activity < NOW() - INTERVAL '30 minutes';

-- Command to force logout all sessions for a user
DELETE FROM user_sessions WHERE user_id = 'TARGET_USER_ID';

5. Monitoring Failed Authentication Attempts:

 Linux command to check auth logs for brute force attempts
grep "Failed password" /var/log/auth.log | awk '{print $9}' | sort | uniq -c | sort -nr

Windows equivalent using PowerShell
Get-EventLog -LogName Security -InstanceId 4625 -After (Get-Date).AddHours(-1) | 
Group-Object -Property {$_.ReplacementStrings[bash]} -NoElement | 
Sort-Object -Property Count -Descending

What Undercode Say:

The banking industry’s authentication challenges stem from both technical debt and risk-averse cultures. While newer technologies like WebAuthn and FIDO2 exist, implementation requires significant infrastructure changes. The most secure banks will likely implement:
– Device fingerprinting
– Behavioral biometrics
– Step-up authentication for high-risk transactions
– Continuous authentication mechanisms

Financial institutions should prioritize:

1. Phishing-resistant authentication methods

2. User experience that doesn’t compromise security

3. Real-time fraud detection systems

4. Customer education on security best practices

Expected Output:

1. Modern authentication system implemented
2. Reduced account takeover incidents
3. Improved customer satisfaction scores
4. Decreased support calls related to access issues

Reference: Why Banks Still Get Authentication Wrong

References:

Reported By: Beingageek Authentication – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅

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