What can I do about this clause?

{'method': 'WEB_FORM', 'recipient': 'https://www.twilio.com/en-us/legal/privacy', 'difficulty': 'EASY', 'action_type': 'OPT_OUT_ARBITRATION', 'instructions': 'Decline functional/targeting cookies via the TrustArc consent banner on twilio.com to prevent VWO from tracking your session for A/B testing purposes.', 'deadline_days': None, 'deadline_hours': None}

Which regulatory agencies enforce this type of clause?

{'agency': 'FTC', 'reason': "The FTC's authority over unfair or deceptive practices extends to undisclosed behavioral profiling through A/B testing tools that affect the content consumers see without adequate disclosure.", 'complaint_url': 'https://reportfraud.ftc.gov/'}

What is the severity of this clause?

ConductAtlas classifies this Visual Website Optimizer (VWO) A/B Testing and Profiling clause as medium severity. Severity reflects the magnitude of rights affected, the breadth of users impacted, and the degree of discretion the platform retains.

Visual Website Optimizer (VWO) A/B Testing and Profiling — Twilio

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What it is

Twilio uses Visual Website Optimizer (VWO) to run A/B tests and personalization experiments on its website, which tracks your behavior to determine which version of a page you see and may profile your browsing patterns.

Change history

added May 1, 2026

Explicitly discloses VWO's A/B testing and behavioral profiling capabilities with specific account IDs and configuration, showing Twilio's use of conversion optimization tools that collect visitor behavior data.

View full change record →

Consumer impact (what this means for users)

VWO's body-hiding initialization technique (opacity:0) means your page experience is briefly suppressed while the profiling script loads, and your session data is used to segment you into A/B test groups, which constitutes behavioral profiling under GDPR.

What you can do

⚠️ These actions may provide transparency or partial mitigation but may not fully address the underlying issue. Effectiveness varies by jurisdiction and individual circumstances.

Opt Out of Arbitration

Decline functional/targeting cookies via the TrustArc consent banner on twilio.com to prevent VWO from tracking your session for A/B testing purposes.

Cross-platform context

See how other platforms handle Visual Website Optimizer (VWO) A/B Testing and Profiling and similar clauses.

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Why it matters (compliance & risk perspective)

VWO temporarily hides the entire page body while loading, preventing you from seeing content until the tracking script has initialized, and your browsing behavior is used to assign you to test variations — a form of automated profiling.

View original clause language

var account_id=1176295, version=2.2, settings_tolerance=2000, hide_element='body', hide_element_style = 'opacity:0 !important;filter:alpha(opacity=0) !important;background:none !important'; ... w._vwo_code=code;code.init(); ... VWO.init(allowed ? 1 : 3); window.VWO.consentState = state;

Institutional analysis (Compliance & legal intelligence)

REGULATORY FRAMEWORK: GDPR Art. 22 (automated decision-making and profiling), Art. 6(1)(a) (consent for profiling), Art. 13 (transparency about profiling activities), EU ePrivacy Directive Art. 5(3), and UK PECR Reg. 6. The VWO consent wrapper (VWO.init with consentState) suggests an attempt at consent-gated initialization, but the primary VWO code loads unconditionally before consent check.

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Applicable agencies

FTC

The FTC's authority over unfair or deceptive practices extends to undisclosed behavioral profiling through A/B testing tools that affect the content consumers see without adequate disclosure.
File a complaint →

Provision details

Document information

Document

Twilio Privacy Notice

Entity

Twilio

Document last updated

April 29, 2026

Tracking information

First tracked

April 27, 2026

Last verified

April 27, 2026

Record ID

CA-P-003593

Document ID

CA-D-00252

Evidence Provenance

Source URL

https://www.twilio.com/en-us/legal/privacy

Wayback Machine

View archived versions →

SHA-256

b33b0cb6d64f68eac8a674782ff99bd2944c56116d36896801552a5b9b7a5b64

Verified

✓ Snapshot stored ✓ Change verified

How to Cite

ConductAtlas Policy Archive
Entity: Twilio | Document: Twilio Privacy Notice | Record: CA-P-003593
Captured: 2026-04-27 14:55:19 UTC | SHA-256: b33b0cb6d64f68ea…
URL: https://conductatlas.com/platform/twilio/twilio-privacy-notice/visual-website-optimizer-vwo-ab-testing-and-profiling/
Accessed: May 2, 2026

Classification

Severity

Medium

Visual Website Optimizer (VWO) A/B Testing and Profiling