Are your ad campaigns reaching the right people, or are they quietly breaching privacy regulations? The line between effective targeting and unlawful data use has never been thinner. Regulators across the globe are issuing record fines. Businesses that rely on behavioural data without proper consent face serious consequences.
This blog breaks down how consent directly shapes targeted advertising and privacy. It covers the regulatory actions that have redefined what platforms and advertisers can do with user data. It also explains the financial penalties already imposed and the practical steps businesses should take to remain compliant while still running effective campaigns.
Whether you manage advertising budgets, oversee compliance, or lead business strategy, the relationship between consent and ad targeting will affect your operations. Understanding it is no longer a legal checkbox. It is a business priority.
Targeted advertising and privacy sit at the centre of a fundamental question about how businesses use personal data to reach their audiences.
Targeted advertising uses personal data such as browsing history, location, device identifiers, and purchase behaviour to deliver ads to specific audiences. Platforms like Google, Meta, and TikTok build detailed user profiles based on this data. These profiles allow advertisers to segment audiences and serve personalised content. The more data a platform collects, the more precise the targeting becomes.
However, collecting and processing this data triggers privacy obligations. Regulations such as the GDPR, CCPA, and the UK Data Protection Act require businesses to obtain clear, informed consent before using personal data for ad targeting.
Advertising accounts for a significant share of personal data processing across digital platforms. Regulators view behavioural targeting as a high-risk activity because it involves profiling users, often without their full awareness. The European Data Protection Board has repeatedly flagged ad-based profiling as an area where consent failures are most common.
Targeted advertising revenue reached $599 billion globally in 2025. It is expected to climb to $633 billion in 2026. With this scale of data-driven revenue, regulators have increased enforcement to ensure businesses handle user consent properly before processing personal information for ad purposes.
Businesses that fail to manage consent in their advertising operations face more than regulatory fines. They risk losing audience trust, damaging brand reputation, and being blocked from running campaigns on major platforms. Only 24% of global consumers trust brands with their data for targeting purposes. That figure dropped 5% from 2022. Declining trust directly impacts campaign performance and customer acquisition.
Consent is no longer a background element of data handling. It has moved to the front of advertising compliance across every major jurisdiction.
Under the General Data Protection Regulation (GDPR), consent for targeted advertising must be freely given, specific, informed, and unambiguous. Users must actively agree to data collection for ad purposes. Pre-ticked boxes, bundled consent, and vague privacy notices do not meet the standard. Businesses must also make it as easy to withdraw consent as it was to give it.
The California Consumer Privacy Act (CCPA) takes a different approach. It does not require opt-in consent for most data processing. However, it does give consumers the right to opt out of the sale or sharing of their personal information. Businesses must display a clear ‘Do Not Sell My Personal Information’ link and honour Global Privacy Control signals.
Other state-level laws in the US, such as the Minnesota Consumer Data Privacy Act and the Kentucky Consumer Data Protection Act, are adding similar requirements. Businesses that run ads across multiple regions must understand how each framework defines consent to avoid violations.
Platforms themselves now enforce consent standards. Google Consent Mode v2 is required for advertisers running campaigns in the EU and EEA. Without it, conversion tracking data is lost. Meta has introduced its own consent mode, and Amazon has launched its Consent Signal framework for DSP advertisers.
These platform-level requirements mean that consent is no longer just a legal obligation. It is a technical prerequisite for running effective ad campaigns.
Regulators have moved well beyond warnings. Several landmark fines in 2023, 2024, 2025, and 2026 have reshaped how platforms and advertisers approach consent in targeted advertising and privacy.
In July 2026, South Korea’s Personal Information Protection Commission fined TikTok 10.3 billion won (approximately $7 million) for unlawfully collecting behavioural data from third-party services to personalise advertisements. The regulator found that TikTok collected data from around 9.45 million active South Korean users without clearly informing them. TikTok had bundled consent for third-party data collection with the consent needed to use the app. Users had no genuine choice.
Separately, in May 2025, Ireland’s Data Protection Commission fined TikTok EUR530 million ($601 million) for transferring European user data to China in breach of GDPR. The DPC also found that TikTok had stored EEA user data on Chinese servers, contradicting its own statements during the investigation.
In October 2024, the Irish DPC fined LinkedIn EUR310 million for using member data for behavioural analysis and targeted advertising without a valid legal basis. LinkedIn had claimed that targeted advertising was a contractual necessity for using the platform. The DPC rejected this argument. It ruled that consent was not freely given and that LinkedIn failed to clearly inform users about how their data was being processed for ads.
This case set a clear precedent. Platforms cannot treat ad targeting as a default feature bundled into terms of service. Consent-driven ad personalisation must be a separate, informed choice.
Meta has faced multiple fines over its handling of consent for targeted advertising. In January 2023, the Irish DPC fined Meta EUR390 million for GDPR breaches across Facebook and Instagram. Meta had argued that personalised ads were contractually necessary for offering its free services. Regulators rejected this, stating that social networking can function without personalised advertising.
In response, Meta introduced a ‘consent or pay’ subscription model in late 2023. The EU Commission later found this model also violated the Digital Markets Act, as it did not offer users a genuine, freely given choice. The case demonstrates that superficial consent mechanisms will not satisfy regulators.
Enforcement actions have accelerated a structural shift in how businesses collect and use data for advertising purposes across all markets.
Third-party cookies have been the backbone of behavioural advertising for over two decades. However, browsers have progressively restricted them. Privacy regulations have made their use increasingly difficult to justify legally. Over 763 million users employed ad blockers in 2024. That number is expected to exceed 1 billion by 2026.
Machine learning models for targeted ads are now 85% reliant on consented first-party data. This shift reflects both regulatory pressure and practical necessity. Advertisers who continue to depend on third-party data without consent face degraded campaign performance and legal exposure.
Data collected with explicit consent tends to be more accurate, more recent, and more relevant. Users who actively choose to share their preferences provide stronger signals for targeting. This creates a cycle where better consent practices lead to better data, which leads to better ad performance.
A consent-first strategy starts with transparent data collection at the point of interaction. Businesses should clearly explain what data they collect, how they use it, and who they share it with. Cookie consent banners must be functional, not decorative. They should offer real choices, not dark patterns that steer users towards accepting everything.
Organisations should also implement a best consent management platform solution that records consent preferences, syncs them across marketing tools, and automatically adjusts data processing based on user choices.
The financial and operational costs of failing to manage consent in targeted advertising are substantial and continue to grow each year.
European regulators issued EUR1.2 billion in GDPR penalties in 2025 alone. Cumulative fines since 2018 have now exceeded EUR7.1 billion. Online tracking and advertising consistently rank among the top violation categories. Businesses of all sizes are affected. Shein received a EUR150 million penalty from France’s CNIL in September 2025 for setting advertising cookies before users had interacted with a consent banner.
Enforcement is not limited to the EU. South Korea’s fine against TikTok in July 2026 shows that Asia-Pacific regulators are increasing scrutiny of ad-related data practices. The UK’s Information Commissioner’s Office had earlier fined TikTok GBP12.7 million over its handling of children’s data. Canada’s privacy commissioner investigated TikTok and found significant consent failures in 2025.
Beyond fines, non-compliance disrupts advertising operations. Businesses that fail to implement consent-based marketing lose access to conversion data, face campaign suspensions, and deal with negative press coverage. The reputational damage often outlasts the financial penalty. Consumers who see a brand fined for privacy violations are less likely to share their data in the future. This creates a compounding effect on marketing performance.
Compliance is achievable without sacrificing advertising effectiveness. The following steps help businesses align their ad targeting practices with current privacy requirements.
Start by mapping every point where your business collects personal data for advertising. Identify which data is collected with consent and which is not. Review your cookie consent banner to confirm it offers genuine choices and records preferences accurately. Check whether your consent records would withstand a regulatory audit.
Deploy Google Consent Mode v2, Meta Consent Mode, and any other platform-specific consent frameworks relevant to your ad campaigns. These integrations ensure that your tracking respects user choices. They also help you retain as much conversion data as legally permissible. Without them, your attribution models will degrade significantly.
A robust CMP centralises consent collection, stores proof of consent, and syncs preferences across your marketing stack. It should support multiple regulatory frameworks, including GDPR, CCPA, and emerging state-level laws. It should also integrate with your ad platforms to automatically adjust data processing based on each user’s consent status.
Targeted advertising and privacy are no longer separate conversations. Every ad campaign that relies on personal data must have a clear consent foundation. The fines imposed on TikTok, LinkedIn, and Meta prove that regulators will hold businesses accountable. Building a consent-first approach protects your ad strategy, strengthens user trust, and keeps your operations compliant across every market you serve.
Consent gaps in your advertising operations create both legal and performance risks. Seers helps businesses implement compliant consent management that works seamlessly with Google, Meta, and Amazon ad platforms. Align your ad targeting with privacy regulations and start building trust with every interaction.
START FREE TODAYRegulators can impose significant fines under frameworks such as GDPR and CCPA. Beyond penalties, businesses may lose access to platform tracking tools, face campaign suspensions, and suffer reputational damage. Platforms like Google now require consent signals before processing conversion data, so non-compliant businesses also lose valuable attribution insights.
Data collected with explicit user consent tends to be more accurate and relevant. Users who actively share preferences provide stronger signals for audience segmentation. This leads to better campaign performance, higher engagement rates, and more reliable conversion tracking compared to data gathered through passive or non-transparent methods.
Several jurisdictions enforce advertising-related data rules. The CCPA and newer state laws like Minnesota’s Consumer Data Privacy Act apply in the US. South Korea, the UK, Canada, and Brazil each have frameworks that regulate how personal data is used for ad targeting. Businesses running cross-border campaigns must comply with rules in every market they operate in.
Personalised advertising remains fully possible within privacy regulations. The requirement is that businesses collect data transparently, obtain valid consent where needed, and give users genuine control over their preferences. Consent management platforms and first-party data strategies allow advertisers to maintain targeting precision without breaching privacy laws.
Consent Mode v2 is a framework introduced by Google that adjusts how tags and tracking scripts behave based on user consent choices. Advertisers in the EU and EEA must implement it to maintain conversion measurement in Google Ads. Without it, data gaps appear in campaign reporting, making it harder to measure ROI and optimise spend effectively.
A consent management platform collects, records, and manages user consent preferences across a website or app. It integrates with advertising tools to ensure data processing aligns with each user’s choices. This prevents unlawful tracking, maintains proof of consent for audits, and ensures platforms receive the consent signals needed for accurate conversion tracking.
First-party data is collected directly from users through interactions with a business, such as website visits, purchases, or form submissions. Third-party data is gathered by external providers and sold to advertisers. Privacy regulations increasingly favour first-party data because it is easier to tie to a specific consent event and provides more reliable targeting signals.
Major fines against TikTok, Meta, and LinkedIn have pushed platforms to introduce stricter consent requirements. Google now mandates Consent Mode v2 for EU advertisers. Meta moved to a consent-based model for personalised ads. These changes mean advertisers must adapt their tracking setups or risk losing access to critical campaign data and measurement tools.
Compliance does not inherently reduce ad performance. Businesses that adopt consent-first strategies often see improved data quality, stronger audience trust, and more efficient campaigns. The shift to consented first-party data produces more meaningful targeting signals. The short-term adjustment period is far less costly than the fines and data losses caused by non-compliance.
Begin with a full audit of current data collection and tracking practices. Identify where consent is missing or improperly collected. Implement a consent management platform that supports GDPR, CCPA, and platform-specific consent modes. Then align your advertising tools with those consent signals to ensure every campaign respects user preferences from the start.
Rimsha ZafarRimsha is a Senior Content Writer at Seers AI with over 5 years of experience in advanced technologies and AI-driven tools. Her expertise as a research analyst shapes clear, thoughtful insights into responsible data use, trust, and future-facing technologies.
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