Securing Site Content/Images
Lets face it, its pretty difficult to secure site content and/or images on the internet. If it can be accessed via the web, it can probably be automated in someway to retrieve/download it.
A year or so ago, someone was telling me, the way they secure some image data, for their gallery, was to check the Http Referer, and if it matches their site, they let the images through.
This is great, however, the Http Referer is actually sent from the browser, so this technique depends upon two things:
a. The browser sends the correct Http Referer (which I’ve seen bugs with this).
b. Someone doesn’t spoof the Referer.
And with .NET this has even gotten easier, in fact, I whipped up a console app and was able to generate this code.
Function FetchURL(ByVal SomeURL As String) As String
Dim WebResp As HTTPWebresponse
Dim HTTPGetRequest As HttpWebRequest
Dim sr As StreamReader
Dim myString As String
HTTPGetRequest = WebRequest.Create(SomeURL)
HTTPGetRequest.KeepAlive = False
HTTPGetRequest.Referer = "http://www.microsoft.com"
WebResp = HTTPGetRequest.GetResponse()
sr = New StreamReader(WebResp.GetResponseStream(), System.Text.Encoding.Default)
myString = sr.ReadToEnd()