# Excessive trust in client-side controls

We can click on the `My account` button and login using the following credentials: | Username | Password | | -------- | -------- | | wiener | peter |

We can now go back to the web store and click on the "Lightweight l33t leather jacket".

Let's add the product to the cart.

We can place the order but it won't go through because we don't have enough credits. Since we are proxying the traffic Burp Suite, we can view this request through the `Proxy > HTTP History` tab.

Let's forward the request to the `Repeater` for further modifications. Once in the `Repeater`, we can set the `price` parameter to the following: ``` 9 ``` Let's send the request.

If we check our cart through the browser, we can see that the price of the product has been set to the modified `price` parameter's value. The quantity has also been updated.

Since the total price is less than our credits, we can now place the order.

We have solved the lab.

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