Web Scraping

A scraper visits your pages to collect what your store publishes: prices, stock, listings or articles. Repeated collection turns your infrastructure into a source for someone else's catalogue or service.

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TL;DR

Scraping extracts your content for reuse, monitoring or resale. It consumes serving capacity and exposes information you invested in producing. Identify what is being collected, protect private data and set explicit access rules for crawlers you want to serve. Different purposes require different decisions.

What is Web Scraping

The attacker retrieves pages or API responses, extracts selected fields and stores them elsewhere. Further visits refresh the copy when prices, stock or content change.

Some collectors traverse an entire catalogue. Others repeatedly check a few valuable pages. The amount collected and the frequency of access are separate questions: a small set of expensive searches can still create substantial load.

The Core Abuse Pattern & Hidden Costs

Retail & e-commerce

Price and catalogue extraction gives competitors or aggregators a refreshed view of your range. Repeated availability checks add database work even when product-page images are cached.

Your analytics also becomes less useful if collectors appear as shopping sessions. Conversion declines in the report without an equivalent change in how genuine customers buy, sending your growth team to investigate the wrong problem.

Classifieds

Copied listings reproduce the inventory that attracts buyers to your platform. Harvested phone numbers and emails expose sellers to unwanted contact outside your messaging system.

Your support team receives complaints about conversations it cannot inspect. Repeated contact-detail requests deserve their own review because the harm differs from someone simply copying a listing's headline and price.

Online publishers

Article extraction and archive crawling repeatedly retrieve work you paid to produce. Weak subscription checks expose content intended for paying readers.

A visible paywall does not protect an article body already delivered in the page response. Alongside crawler controls, your publishing system needs to decide which text an unauthenticated reader actually receives.

Additional industries

Luxury scraping targets private-sale and unreleased products. Ticketing scraping polls seat availability and pricing. Beauty scraping tracks shades and regional stock; electronics scraping tracks availability and price. Marketplace scraping collects listings and seller details. SaaS/API scraping extracts datasets directly.

Fraudsters’ Best Practices

Divide the collection across connections

The attacker spreads page requests across IPs so no single connection retrieves the whole catalogue. Each IP appears to browse a modest amount. The broader pattern emerges in repeated product coverage and synchronised refreshes across sessions.

Imitate an ordinary browser or crawler

A request claims a familiar browser or search-crawler name. That label is supplied by the client and does not establish who sent it. Treat claimed crawler identity as something to verify before granting an exception.

Collect from the underlying API

The visible page often obtains prices or listings through another request. A collector can target that response directly. A browser-only check on the page leaves the data accessible if the server returning it applies no equivalent access controls.

Refresh selectively

After collecting a catalogue, the attacker returns to changing fields such as stock and price. Your team sees repeated small responses rather than another full crawl. Low data volume does not necessarily mean low commercial value or low processing cost.

Scrapy's documentation explains crawling and structured extraction; its source code is public. It has legitimate uses. Your engineers can use it on your test site to understand what an ordinary collector receives and verify your access rules.

How to Detect & Prevent Web Scraping

Check catalogue coverage per session, repeated stock queries, contact-detail reveals and data returned per API key. Compare what is retrieved with the access you intended to provide.

Require server-side authorisation for private products and subscriber content. Rate limit expensive searches and data retrieval, including direct API calls. Verify crawler identity before creating exceptions.

Measure server load and customer page performance while checking that approved search engines and partners still work. Blocking all automation would also remove services you deliberately want to use.

How Kairal can help you stop Web Scraping

Kairal records requested pages, IPs and sessions and scores requests using browser properties and how the client connects. Browser collection adds device records where it is installed.

Bot Protection applies configured checks or blocks and logs the outcome. Agent Traffic Intelligence verifies recognised crawlers and agents so you can assign explicit access policies.

You inspect which pages attract repeated collection and adjust protection accordingly. Your application still decides who is authorised to receive private content. Request scoring helps control access attempts; it does not remove confidential text already served in a response.

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