icecappman's Blog

Cybercrime...issues tackled? by Waran Gajan Bilal

Waran GB's photo
Waran GB
·

2 min read

  1. Preventing SQL Injection:
import psycopg2

# Using parameterized queries to prevent SQL injection
def execute_query(connection, query, params):
    cursor = connection.cursor()
    cursor.execute(query, params)
    connection.commit()
  1. Implementing HTTPS:
from flask import Flask
from flask_sslify import SSLify

app = Flask(__name__)
sslify = SSLify(app)
  1. Enforcing Strong Password Policies:
import re

def is_strong_password(password):
    # Enforcing password complexity rules
    if re.match(r'^(?=.*\d)(?=.*[A-Z])(?=.*[a-z])(?=.*[!@#$%^&*()-_+=]).{8,}$', password):
        return True
    else:
        return False
  1. Using Multi-Factor Authentication (MFA):
from pyotp import TOTP

def generate_totp_secret():
    return TOTP().secret

def verify_totp_token(secret, token):
    return TOTP(secret).verify(token)
  1. Implementing Content Security Policy (CSP):
<meta http-equiv="Content-Security-Policy" content="default-src 'self'; script-src 'self' 'unsafe-inline'">
  1. Implementing Cross-Site Request Forgery (CSRF) Protection:
from flask_wtf.csrf import CSRFProtect

app = Flask(__name__)
csrf = CSRFProtect(app)
  1. Encrypting Sensitive Data:
from cryptography.fernet import Fernet

def encrypt_data(data, key):
    f = Fernet(key)
    return f.encrypt(data.encode())

def decrypt_data(encrypted_data, key):
    f = Fernet(key)
    return f.decrypt(encrypted_data).decode()
  1. Implementing Rate Limiting:
from flask_limiter import Limiter
from flask_limiter.util import get_remote_address

app = Flask(__name__)
limiter = Limiter(
    app,
    key_func=get_remote_address,
    default_limits=["200 per day", "50 per hour"]
)
  1. Implementing Access Control Lists (ACL):
def is_authorized(user, resource):
    # Check if user has permissions for the given resource
    return user.role.has_permission(resource)
  1. Regularly Updating Dependencies:
pip install --upgrade package_name
  1. Input Sanitization to Prevent Cross-Site Scripting (XSS):
import bleach

def sanitize_input(input_data):
    return bleach.clean(input_data)
  1. Implementing Two-Factor Authentication (2FA):
import pyotp

def generate_2fa_token(secret):
    return pyotp.TOTP(secret).now()

def verify_2fa_token(secret, token):
    return pyotp.TOTP(secret).verify(token)
  1. Using Content Security Policy (CSP) Headers:
from flask import Flask
from flask_talisman import Talisman

app = Flask(__name__)
talisman = Talisman(
    app,
    content_security_policy={
        'default-src': '\'self\'',
        'script-src': [
            '\'self\'',
            'https://cdnjs.cloudflare.com'
        ]
    }
)
  1. Implementing Intrusion Detection System (IDS):
import snortlib

def start_snort():
    snort = snortlib.Snort()
    snort.start()
  1. Implementing WAF (Web Application Firewall):
from flask_waf import WAF

app = Flask(__name__)
waf = WAF(app)
  1. Regular Security Patching:
sudo apt-get update
sudo apt-get upgrade
  1. Implementing Role-Based Access Control (RBAC):
class User:
    def __init__(self, role):
        self.role = role

class Role:
    def __init__(self, name, permissions):
        self.name = name
        self.permissions = permissions

    def has_permission(self, permission):
        return permission in self.permissions
  1. Enabling Security Headers:
from flask import Flask
from flask_headers import security_headers

app = Flask(__name__)
app.after_request(security_headers)

These code snippets demonstrate various techniques and practices that developers and cybersecurity experts can use to mitigate cybercrime risks in their applications and systems.

cybersecurity