Cookie Policy

Cookies are small text files that websites place on your device (computer, smartphone, tablet) when you visit them. They are widely used to make websites work more efficiently and provide information to website owners.

1.1 How Cookies Work

When you visit a website:

• The website sends a cookie to your browser
• Your browser stores the cookie on your device
• The cookie is sent back to the website on subsequent visits
• This allows the website to "remember" information about your visit

1.2 What Information Do Cookies Store?

Cookies typically contain:

• Cookie Name: A unique identifier for the cookie
• Cookie Value: The information being stored
• Domain: The website that set the cookie
• Expiration Date: When the cookie will be deleted
• Path: Which pages on the site can access the cookie
• Secure Flag: Whether the cookie requires HTTPS

1.3 Cookie Lifespan

Cookies can be classified by how long they last:

• Session Cookies: Temporary cookies deleted when you close your browser
• Persistent Cookies: Remain on your device until they expire or you delete them

1.4 Are Cookies Safe?

Yes, cookies are generally safe:

• They cannot carry viruses or malware
• They cannot access other data on your device
• They cannot run programs or install software
• They only store information you provide or generate through browsing

However, cookies can be used to track your browsing behavior, which is why privacy regulations like GDPR and ePrivacy require consent for non-essential cookies.

We use cookies for several important purposes to improve your experience on our website and provide better services.

2.1 Essential Website Functionality

Some cookies are necessary for the website to function properly:

• Authentication: Keeping you logged in as you navigate pages
• Security: Protecting against fraud and unauthorized access
• Session Management: Maintaining your session during your visit
• Form Completion: Remembering information you've entered
• Shopping Cart: Storing items you've added (if applicable)

2.2 Performance and Analytics

We use cookies to understand how our website performs:

• Measuring website traffic and visitor numbers
• Understanding which pages are most popular
• Identifying technical issues
• Analyzing user journey and behavior patterns
• Improving website speed and performance

2.3 Personalization

Cookies help us personalize your experience:

• Remembering your language preferences
• Saving your display settings (dark mode, font size, etc.)
• Showing relevant content based on your interests
• Providing customized recommendations

2.4 Marketing and Advertising

With your consent, we use cookies for:

• Displaying relevant advertisements
• Measuring advertising campaign effectiveness
• Preventing repeated display of the same ads
• Understanding which marketing channels work best
• Retargeting visitors who showed interest

2.5 Social Media Integration

Social media cookies enable:

• Sharing content on social platforms
• Logging in using social media accounts
• Displaying social media feeds
• Tracking social media interactions

We categorize cookies based on their purpose and functionality. Here are the main types of cookies used on our website:

3.1 Cookie Categories Summary

Category	Purpose	Consent Required	Can Be Disabled
Strictly Necessary	Essential functionality	No	No
Performance	Analytics and optimization	Yes	Yes
Functionality	Personalization	Yes	Yes
Marketing	Targeted advertising	Yes	Yes
Social Media	Social features	Yes	Yes

Cookies can also be classified based on who sets them:

4.1 First-Party Cookies

These are cookies set directly by our website (debasisbhattacharjee.com):

• Set By: Our domain
• Purpose: Enhance your experience on our site
• Examples:
  • Session cookies for logged-in users
  • Preference cookies for site settings
  • Shopping cart cookies
  • Language selection
• Privacy: More private as they're limited to our domain
• Control: We have full control over these cookies

4.2 Third-Party Cookies

These are cookies set by external services embedded on our website:

• Set By: External domains (e.g., google.com, facebook.com)
• Purpose: Provide specific functionality or tracking
• Examples:
  • Google Analytics cookies
  • Social media sharing buttons
  • Advertising networks
  • Embedded videos (YouTube, Vimeo)
  • Payment processors
• Privacy Concerns: Can track you across multiple websites
• Control: Governed by third-party privacy policies

4.3 Third-Party Services We Use

We use the following third-party services that may set cookies:

Service	Purpose	Privacy Policy
Google Analytics	Website analytics and traffic analysis	Google Privacy Policy
Google Ads	Advertising and remarketing	Google Privacy Policy
Facebook Pixel	Ad targeting and conversion tracking	Facebook Privacy Policy
YouTube	Video content embedding	Google Privacy Policy
Payment Processors	Secure payment processing	Varies by processor (Razorpay, PayPal, Stripe)

4.4 Managing Third-Party Cookies

You can manage third-party cookies through:

• Our Cookie Banner: Opt out of specific third-party services
• Browser Settings: Block all third-party cookies
• Third-Party Opt-Outs: Use opt-out tools provided by services
• Privacy Extensions: Use browser extensions that block trackers

Below is a comprehensive list of cookies used on our website, their purposes, and durations:

5.1 Strictly Necessary Cookies

Cookie Name	Purpose	Duration	Type
PHPSESSID	Maintains user session state	Session	First-party
csrf_token	Security protection against CSRF attacks	Session	First-party
cookie_consent	Stores your cookie preferences	1 year	First-party
auth_token	Authenticates logged-in users	2 weeks	First-party

5.2 Performance Cookies

Cookie Name	Purpose	Duration	Type
_ga	Google Analytics - distinguishes users	2 years	Third-party
_gid	Google Analytics - distinguishes users	24 hours	Third-party
_gat	Google Analytics - throttles request rate	1 minute	Third-party
_ga_[container-id]	Google Analytics 4 - session persistence	2 years	Third-party

5.3 Functionality Cookies

Cookie Name	Purpose	Duration	Type
user_language	Stores preferred language	1 year	First-party
user_preferences	Stores display preferences	1 year	First-party
theme_mode	Remembers dark/light mode selection	6 months	First-party

5.4 Marketing Cookies

Cookie Name	Purpose	Duration	Type
_fbp	Facebook Pixel - tracks conversions	3 months	Third-party
fr	Facebook - delivers advertisements	3 months	Third-party
IDE	Google DoubleClick - ad serving	1 year	Third-party
test_cookie	Google DoubleClick - checks if browser accepts cookies	15 minutes	Third-party

In addition to cookies, we may use other similar technologies to enhance your experience and analyze website usage:

6.1 Web Beacons (Pixels)

Also known as pixel tags or clear GIFs:

• What They Are: Small invisible images embedded in web pages or emails
• Purpose: Track whether you've opened an email or visited a page
• Information Collected: View time, IP address, browser type
• Usage: Email campaigns, conversion tracking, analytics

6.2 Local Storage

HTML5 local storage allows websites to store data on your device:

• What It Is: Browser feature for storing larger amounts of data than cookies
• Purpose: Save application state, preferences, cached data
• Differences from Cookies:
  • Can store more data (typically 5-10 MB)
  • Never sent to the server automatically
  • No expiration date (persists until manually cleared)
• Our Usage: Storing user preferences, form data, cache

6.3 Session Storage

• Similar To: Local storage but temporary
• Duration: Cleared when browser tab is closed
• Purpose: Temporary data during your browsing session

6.4 IndexedDB

• What It Is: Low-level API for storing significant amounts of structured data
• Purpose: Offline functionality, caching large datasets
• Usage: May be used for progressive web app features

6.5 Device Fingerprinting

We use minimal device fingerprinting:

• What It Is: Collecting device characteristics to create a unique identifier
• Data Collected: Screen resolution, browser version, installed fonts, timezone
• Purpose: Fraud prevention, security, analytics
• Privacy: Used sparingly and combined with other data points

6.6 Server Logs

• Automatic Collection: Our servers automatically log certain information
• Data Logged: IP address, browser type, referring page, date/time, pages visited
• Purpose: Server maintenance, security, analytics
• Retention: Typically 90 days

6.7 ETags

• What They Are: HTTP response headers that can be used for caching
• Purpose: Improve website performance by caching resources
• Privacy: Can potentially be used for tracking; we use them only for legitimate caching

You have several options for managing cookies and controlling your privacy:

7.1 Through Our Cookie Banner

The easiest way to manage cookies:

• When you first visit, you'll see a cookie consent banner
• Choose "Accept All" to consent to all cookies
• Choose "Reject All" to decline non-essential cookies
• Choose "Cookie Settings" to select specific cookie categories
• Your preferences are saved and respected across your visits

7.2 Through Browser Settings

All major browsers allow you to control cookies:

Google Chrome:

1. Go to Settings > Privacy and security > Cookies and other site data
2. Choose your preferred cookie setting
3. Manage exceptions for specific sites

Mozilla Firefox:

1. Go to Options > Privacy & Security
2. Under Cookies and Site Data, choose your settings
3. Click "Manage Data" to view and delete specific cookies

Safari:

1. Go to Preferences > Privacy
2. Choose "Block all cookies" or manage website data
3. Safari blocks most third-party cookies by default

Microsoft Edge:

1. Go to Settings > Cookies and site permissions > Cookies and site data
2. Choose "Block all cookies" or manage exceptions
3. Clear browsing data to delete existing cookies

7.3 Third-Party Opt-Out Tools

For advertising cookies, you can use:

• Network Advertising Initiative: NAI Opt-Out
• Digital Advertising Alliance: DAA Opt-Out
• European Interactive Digital Advertising Alliance: Your Online Choices
• Google Ads Settings: Manage Ad Personalization
• Facebook Ad Preferences: Manage Facebook Ads

7.4 Browser Extensions

Privacy-focused browser extensions can help:

• Privacy Badger: Blocks invisible trackers
• uBlock Origin: Blocks ads and trackers
• Ghostery: Shows and blocks trackers
• Cookie AutoDelete: Automatically deletes cookies

7.5 Mobile Devices

For mobile browsers:

• iOS Safari: Settings > Safari > Block All Cookies
• Android Chrome: Settings > Site settings > Cookies
• App Tracking: Manage in device privacy settings

7.6 Impact of Blocking Cookies

Please note that blocking cookies may affect functionality:

• You may need to log in repeatedly
• Preferences and settings won't be saved
• Some features may not work properly
• Website personalization will be limited
• Shopping cart functionality may be affected

We comply with EU ePrivacy Directive and GDPR requirements for cookie consent.

8.1 When Consent is Required

Under EU law, we need your consent before using:

• Performance and analytics cookies
• Functionality cookies (beyond essential features)
• Marketing and advertising cookies
• Social media cookies
• Any cookies not strictly necessary for the service

8.2 Valid Consent Requirements

For consent to be valid, it must be:

• Freely Given: Not coerced or forced
• Specific: Separate consent for different purposes
• Informed: Clear information provided beforehand
• Unambiguous: Clear affirmative action required
• Withdrawable: As easy to withdraw as to give

8.3 Our Consent Mechanism

Our cookie banner ensures valid consent:

• Appears before non-essential cookies are set
• Provides clear information about cookie types
• Offers granular control (accept all, reject all, customize)
• Links to this detailed Cookie Policy
• Allows easy withdrawal of consent
• Does not use pre-ticked boxes
• Does not block access to content if you refuse

8.4 Consent Management

We store your consent choices:

• Duration: 12 months
• Storage Method: First-party cookie
• Update: Re-consent required after expiration
• Changes: You can modify preferences anytime

8.5 Withdrawing Consent

To withdraw your consent:

• Click "Cookie Settings" in the footer
• Adjust your preferences
• Clear your browser cookies manually
• Use browser privacy settings

Withdrawing consent does not affect the lawfulness of processing based on consent before withdrawal.

8.6 Consent Records

We maintain records of consent to demonstrate compliance:

• What you consented to
• When you gave consent
• How you gave consent
• Whether you've withdrawn consent

Some browsers have a "Do Not Track" (DNT) feature that signals to websites that you don't want to be tracked.

9.1 Current Status

Regarding DNT signals:

• There is currently no universal standard for how websites should respond to DNT
• Different browsers implement DNT differently
• Many websites and advertising networks do not honor DNT signals
• Legal requirements around DNT are still evolving

9.2 Our Approach

We are monitoring DNT developments:

• We detect DNT signals from your browser
• We respect DNT as an opt-out preference where technically feasible
• Essential cookies may still be used regardless of DNT
• We encourage using our cookie banner for precise control

9.3 Enabling Do Not Track

To enable DNT in your browser:

• Chrome: Settings > Privacy and security > Send a "Do Not Track" request
• Firefox: Preferences > Privacy & Security > Send "Do Not Track" signal
• Safari: Preferences > Privacy > Ask websites not to track me
• Edge: Settings > Privacy, search, and services > Send "Do Not Track" requests

9.4 Alternative Privacy Tools

For stronger privacy protection:

• Use our cookie preferences (more reliable than DNT)
• Enable browser tracking protection
• Use privacy-focused browsers (Brave, DuckDuckGo)
• Install privacy extensions
• Use VPN services

10.1 Updates to This Policy

We may update this Cookie Policy from time to time:

• To reflect changes in cookies we use
• To comply with new legal requirements
• To improve clarity and transparency
• Based on user feedback

Material changes will be highlighted and may require re-consent.

10.2 Notification of Changes

We will notify you of significant changes through:

• Updated "Last Modified" date at the top of this page
• Prominent notice on our website
• Email notification (for registered users)
• Cookie banner update prompting re-consent

10.3 Contact Us

For questions about cookies or this policy:

• Email: privacy@debasisbhattacharjee.com
• Cookie-Specific Inquiries: cookies@debasisbhattacharjee.com
• Data Protection Officer: dpo@debasisbhattacharjee.com
• Response Time: Within 3-5 business days

10.4 Related Policies

For more information about our data practices:

• Privacy Policy - Comprehensive data protection information
• GDPR Compliance - EU data protection rights
• Terms of Service - General terms and conditions

10.5 Additional Resources

Learn more about cookies and online privacy:

• All About Cookies - Independent cookie information
• UK ICO Cookie Guidance - Official guidance
• CookieLaw.org - Cookie compliance resources