Update security policy

The email wasn't working anymore.

SECURITY.md

@@ -7,28 +7,14 @@ For example, for now we skip CVE assignment.
 
 Please report to us any issues you find. This document explains how to do that and what to expect in return.
 
-All security bugs in our releases should be reported by email to [email protected].
-This mail is delivered to a small security team.
+All security bugs in our releases should be reported by email to [email protected]
 Your email will be acknowledged within 24 hours, and you'll receive a more detailed response
 to your email within 72 hours indicating the next steps in handling your report.
-For critical problems, you can encrypt your report using our PGP key (listed below).
-
 Please use a descriptive subject line for your report email.
-After the initial reply to your report, the security team will
-endeavor to keep you informed of the progress being made towards a fix and full announcement.
-These updates will be sent at least every five days.
-In reality, this is more likely to be every 24-48 hours.
-
-If you have not received a reply to your email within 48 hours or you have not heard from the security
-team for the past five days please contact us by email to [email protected] or by Telegram message
-to [our support](https://t.me/highload_support).
-Please note that [email protected] list includes all developers, who may be outside our opensource security team.
-When escalating on this list, please do not disclose the details of the issue.
-Simply state that you're trying to reach a member of the security team.
 
 ### Flagging Existing Issues as Security-related
 
-If you believe that an existing issue is security-related, we ask that you send an email to [email protected].
+If you believe that an existing issue is security-related, we ask that you send an email to [email protected]
 The email should include the issue ID and a short description of why it should be handled according to this security policy.
 
 ### Disclosure Process
@@ -52,64 +38,4 @@ The best way to receive security announcements is to subscribe ("Watch") to our
 Any GitHub issues pertaining to a security issue will be prefixed with [security].
 
 ### Comments on This Policy
-If you have any suggestions to improve this policy, please send an email to [email protected] for discussion.
-
-### PGP Key for [email protected]
-
-We accept PGP-encrypted email, but the majority of the security team are not regular PGP users
-so it's somewhat inconvenient. Please only use PGP for critical security reports.
-
-```
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-=lnt2
------END PGP PUBLIC KEY BLOCK-----
-```
+If you have any suggestions to improve this policy, please send an email to [email protected] for discussion.