improve the result of pr 2570

We improve the language in `SECURITY.md` and the resulting
`SECURITY.html` page, and add an important disclaimer.  We also add
that same disclaimer to the bottom of the of the main `index.html`
we page (via `index.md`).

SECURITY.md

@@ -1,10 +1,12 @@
 # Security Policy
 
+
 ## Supported Versions
 
-**ALL CODE IN ALL IOCCC ENTRIES IS UNSUPPORTED!!**
+**ALL IOCCC ENTRY CODE IS UNSUPPORTED!!**
+
+We will **NOT** provide security updates to any IOCCC entry code!
 
-Use code in this repo at your own risk!  We will **NOT** provide security updates to any IOCCC entry code!
 
 ## Reporting a Vulnerability
 
@@ -12,6 +14,26 @@ Even though **ALL IOCCC ENTRY CODE IS UNSUPPORTED**,
 if you wish to discuss a security concern regarding this repo then
 please **send email the IOCCC judges** by consulting the bottom section
 of the [How to contact the IOCCC](https://www.ioccc.org/contact.html) web page.
-If, on the other hand, you wish to discuss a possible vulnerability in the
-[mkiocccentry repo](https://github.com/ioccc-src/mkiocccentry) then please [report it
-here](https://github.com/ioccc-src/mkiocccentry/security/advisories/new).
+
+**NOTICE**: If you wish to discuss a possible vulnerability with
+the [mkiocccentry GitHub repo](https://github.com/ioccc-src/mkiocccentry)
+or any of the `mkiocccentry tools`:
+
+* `chkentry(1)`
+* `fnamechk(1)`
+* `iocccsize(1)`
+* `mkiocccentry(1)`
+* `txzchk(1)`
+* etc.
+
+Please report any possible mkiocccentry vulnerability using the
+[mkiocccentry security advisory
+interface](https://github.com/ioccc-src/mkiocccentry/security/advisories/new)
+instead.
+
+
+# Important Disclaimer
+
+IOCCC code is for **educational and entertainment purposes only**. We do **NOT** recommend installing any winning IOCCC entry code. Use code found the IOCCC repo and in the IOCCC web site **at your own risk!**
+
+The [IOCCC](index.html) and the [IOCCC judges](judges.html) DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THEY BE LIABLE FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.