/* * This file is part of the Symfony package. * * (c) Fabien Potencier * * For the full copyright and license information, please view the LICENSE * file that was distributed with this source code. */ namespace Symfony\Component\String; if (!\function_exists(u::class)) { function u(?string $string = ''): UnicodeString { return new UnicodeString($string ?? ''); } } if (!\function_exists(b::class)) { function b(?string $string = ''): ByteString { return new ByteString($string ?? ''); } } if (!\function_exists(s::class)) { /** * @return UnicodeString|ByteString */ function s(?string $string = ''): AbstractString { $string = $string ?? ''; return preg_match('//u', $string) ? new UnicodeString($string) : new ByteString($string); } } responders – OWASP Jakarta
Fig1e Microsoft Defender Security Center vulnerability patching status

Guidance for responders: Investigating and remediating on-premises Exchange Server vulnerabilities | MSRC Blog

Guidance for responders: Investigating and remediating on-premises Exchange Server vulnerabilities | MSRC Blog This guidance will help customers address threats taking advantage of the recently disclosed Microsoft Exchange Server on-premises vulnerabilities CVE-2021-26855, CVE-2021-26858, CVE-2021-26857, and CVE-2021-27065, which are being exploited. We strongly urge customers to immediately update systems. Failing to Read more…