How do I secure Google Gemini applications?

Integrate Wardstone Guard with your Google Gemini application to detect prompt injections, jailbreaks, harmful content, and data leakage. Wardstone validates inputs before they reach Gemini and screens outputs before returning them to users.

What security risks does Google Gemini have?

Image-Based Prompt Injection: Malicious instructions can be embedded in images that Gemini processes but humans don't notice. Search Grounding Manipulation: When grounded with Google Search, Gemini can retrieve and execute malicious web content. Cross-Modal Attacks: Attackers can use audio or video inputs to bypass text-based safety measures.

Google Gemini + Wardstone

Secure Multimodal AI Applications

Protect your Google Gemini applications with Wardstone Guard. Secure Gemini 3 Pro and Flash models against prompt attacks, content violations, and data leakage.

10 Supported Models· all protected with sub-30ms latency

Gemini 3 ProGemini 3 FlashGemini 2.5 ProGemini 2.5 FlashGemini 2.5 Flash-LiteGemini 2.0 Flash+4 more

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Why Secure Gemini?

Image-Based Prompt Injection

High Risk

Malicious instructions can be embedded in images that Gemini processes but humans don't notice.

Search Grounding Manipulation

High Risk

When grounded with Google Search, Gemini can retrieve and execute malicious web content.

Cross-Modal Attacks

Medium Risk

Attackers can use audio or video inputs to bypass text-based safety measures.

Security Considerations

1
Multimodal inputs (images, audio) can carry hidden prompt injections
2
Google's safety filters are optimized for consumer use, not enterprise security
3
Grounding with Google Search can introduce external prompt injection vectors
4
Wardstone validates text extracted from multimodal inputs

How to Integrate

Add Wardstone to your stack
Install Wardstone SDK alongside the Google AI SDK or Vertex AI client.
Validate text inputs
Screen all text prompts before sending to Gemini's generateContent API.
Extract and validate multimodal text
For images with text, use OCR to extract and validate embedded content.
Screen grounded responses
When using Search grounding, validate outputs for injected instructions from web sources.

Pricing Note

Gemini pricing includes both input and output tokens. Wardstone's security layer adds minimal overhead compared to model inference costs.

Secure Google Gemini with Wardstone

# Step 1: Check user input with Wardstone
curl -X POST "https://api.wardstone.ai/v1/detect" \
  -H "Authorization: Bearer YOUR_WARDSTONE_KEY" \
  -H "Content-Type: application/json" \
  -d '{"text": "User message here"}'
 
# Response: { "prompt_attack": { "detected": false, ... } }
 
# Step 2: If safe, send to Google Gemini
curl -X POST "https://generativelanguage.googleapis.com/v1beta/models/gemini-2.5-flash:generateContent?key=YOUR_GOOGLE_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "contents": [{"parts": [{"text": "User message here"}]}]
  }'
 
# Step 3: Check Gemini response with Wardstone before returning to user

Common Use Cases

Multimodal applications (text + image)

Google Workspace integrations

Search-augmented generation

Video and audio analysis

Enterprise knowledge bases

All Supported Gemini Models

Wardstone Guard protects all Google Gemini models with the same comprehensive security coverage. Whether you're using the latest releases or legacy models still in production, every API call is protected.

Gemini 3 Pro

Gemini 3 Flash

Gemini 2.5 Pro

Gemini 2.5 Flash

Gemini 2.5 Flash-Lite

Gemini 2.0 Flash

Gemini 2.0 Flash-Lite

Gemini 1.5 Pro

Gemini 1.5 Flash

Gemini 1.0 Pro

Major Provider