https://en.netcup.nllk.net/blog/tags/security/ Recent content in security on netcup hosting blog Hugo -- gohugo.io en Sat, 29 Aug 2026 00:00:00 +0000 https://en.netcup.nllk.net/blog/post/0037-python-run-shell-command/ Sat, 29 Aug 2026 00:00:00 +0000 https://en.netcup.nllk.net/blog/post/0037-python-run-shell-command/ This article shows how to call an external program from Python using subprocess.run, and what shell=True really costs you. https://en.netcup.nllk.net/blog/post/0024-php-get-current-url/ Fri, 28 Aug 2026 00:00:00 +0000 https://en.netcup.nllk.net/blog/post/0024-php-get-current-url/ This article answers the question of how to assemble the full URL of the current page in PHP and why the widespread solution is a security hole. https://en.netcup.nllk.net/blog/post/0012-php-generate-random-string/ Fri, 28 Aug 2026 00:00:00 +0000 https://en.netcup.nllk.net/blog/post/0012-php-generate-random-string/ This article answers the question of how to generate a random string in PHP, and what you have to watch out for when security is involved. https://en.netcup.nllk.net/blog/post/0027-php-get-file-extension/ Fri, 28 Aug 2026 00:00:00 +0000 https://en.netcup.nllk.net/blog/post/0027-php-get-file-extension/ This article answers the question of how to determine a file's extension in PHP and why you must not rely on it when handling uploads. https://en.netcup.nllk.net/blog/post/0015-php-get-client-ip-address/ Fri, 28 Aug 2026 00:00:00 +0000 https://en.netcup.nllk.net/blog/post/0015-php-get-client-ip-address/ This article answers the question of how to determine a visitor's IP address in PHP, and why the widely copied code snippets for it are dangerous. https://en.netcup.nllk.net/blog/post/0008-php-prevent-sql-injection/ Fri, 28 Aug 2026 00:00:00 +0000 https://en.netcup.nllk.net/blog/post/0008-php-prevent-sql-injection/ This article answers the question of how to protect your PHP application against SQL injection using prepared statements.