How do I know a site uses Radware Bot Manager?

Check the first response's cookies for __uzma through __uzme, then search the HTML for __uzdbm_, SSJSConnectorObj, ssConf( or a stormcaster.js script. Any three core cookies, or either injected marker, is a positive identification. Server: rdwr appears only in Radware Cloud mode.

Why can't I detect a Radware block from the status code?

Because the status line points both ways. The "Verifying your browser before proceeding..." interstitial is a 200 and the validate.perfdrive.com block page returns 200 even for /robots.txt, while a CAPTCHA redirect is a 302 to that host and eBay fronts Radware with a 403 and a 307. Validate on content markers, the Location header, and the JS-set __uzmj cookies.

Can I solve Radware's crypto challenge without a browser?

No. It's a CPU-bound proof of work that Radware's own whitepaper says "must be solved in the visitor's browser," shipped as WebAssembly with a JavaScript fallback, and its difficulty scaling, nonce format and submission format are unpublished. Run a real engine, Playwright locally or a rendering API, instead of reimplementing it.

What are the __uzma, __uzmb and __uzmc cookies?

They're Radware Bot Manager's server-set state, named from the ShieldSquare lineage. In the sessions tested __uzma held a UUID, __uzmb and __uzmd unix timestamps, __uzme a four-digit value and __uzmf a long dash-delimited token, at a Max-Age of 15724800 seconds. Three of the four sites set them HttpOnly, Path=/, SameSite=Lax; eBay sets them readable. The agent then writes a parallel non-HttpOnly set whose names append a j.

My residential proxy works on one Radware site and fails on another. Why?

Because deployment mode, not the vendor, decides what gets enforced. A clean residential exit clears layer 1, which matters because Radware's CAPTCHA page names anonymous proxy networks and bad network reputation as its two stated block reasons. On an inline-connector site in a light configuration, that plus honest pacing can be the whole job. On a Radware Cloud deployment, layers 4 through 7 still need an agent that runs, so classify the mode before you blame the IP.

Why can't I lift a browser session into requests the way I can with DataDome?

Because Radware splits its state in half. The server sets __uzma through __uzmf HttpOnly, so JavaScript can't read them to hand over, while the agent writes a separate non-HttpOnly mirror whose names append a j. Copying what document.cookie exposes gives you the mirror without the server half, and a session missing half the pair is itself the signal. DataDome keeps everything in one JS-readable cookie, which is why cookie-lifting is viable there and a dead end here. Our DataDome guide covers that side; for the header-carried equivalents see our Kasada and Akamai guides.

Guides

How to Bypass Radware Bot Manager When Scraping

Bypass Radware Bot Manager the honest way: confirm it by its __uzm cookies and stormcaster.js, read its crypto challenge, and scrape public data in code.

S SparkProxyOct 10, 2026 - 03:30 0 29 min read

The first problem with trying to bypass Radware Bot Manager is that most engineers can't tell they've hit it. Four Radware-protected sites probed on 8 October 2026 answered with three different server banners, two of them the origin's own IIS, and not one advertised Radware. Two gated on opposite signals: www.optica.org bounced a bare python-requests/2.32.3 client to a CAPTCHA host and served Chrome the real page, while www.imlive.com did the reverse. Radware's dependable tells live in its cookies and its client script, not in the response envelope. This guide covers identifying it positively, what each stack layer measures, why the crypto challenge kills stateless clients, and an escalation ladder, including where it stops.

Confirm it's Radware Bot Manager, not something else

Radware Bot Manager is the ShieldSquare product under new ownership, acquired with Kaalbi Technologies Private Ltd. in March 2019 for roughly US$14.0 million per Radware's FY2018 Form 20-F. The lineage shows: perfdrive.com dates to 2014, and every client-side identifier in the agent is prefixed SS.

Here's what you can observe, ranked by the weight it deserves.

Marker	Where it shows up	How much to trust it
`__uzma`, `__uzmb`, `__uzmc`, `__uzmd`, `__uzme`	`Set-Cookie` on the first response	The dependable core, on all four sites tested. `HttpOnly`, `Path=/`, `SameSite=Lax` on three; eBay self-hosts the tag and sets them readable. `__uzmf` and `uzmx` appear on some deployments only
`__uzdbm_1` through `__uzdbm_7`	An inline `

How to Bypass Radware Bot Manager When Scraping

# Confirm it's Radware Bot Manager, not something else

Confirm it's Radware Bot Manager, not something else