Added SECURITY.md file

 * New file contains the security policy, vulnerability reporting procedure
   and a PGP key that can be used to create secure vulnerability reports.
 * Removed Security section from README.md

Signed-off-by: Mike Kelly <mike.kelly@arm.com>
Change-Id: Ifdffdf81a7d2033a4fa323f081a7336504d67971

2 files changed, 68 insertions, 3 deletions

diff --git a/README.md b/README.md
index 1a8770414f..f76085c13c 100644
--- a/README.md
+++ b/README.md
@@ -68,6 +68,3 @@ Third party tools used by Arm NN:
 ### Contributions
 
 The Arm NN project welcomes contributions. For more details on contributing to Arm NN see the [Contributing page](https://mlplatform.org/contributing/) on the [MLPlatform.org](https://mlplatform.org/) website, or see the [Contributor Guide](ContributorGuide.md).
-
-### Security Issues
-If you believe you have discovered a security issue please contact arm-security@arm.com
diff --git a/SECURITY.md b/SECURITY.md
new file mode 100644
index 0000000000..41ebdbc0c3
--- /dev/null
+++ b/SECURITY.md
@@ -0,0 +1,68 @@
+**Reporting vulnerabilities**
+
+Arm takes security issues seriously and welcomes feedback from researchers and the security community in order to improve the security of its products and services. We operate a coordinated disclosure policy for disclosing vulnerabilities and other security issues.
+
+Security issues can be complex and one single timescale doesn't fit all circumstances. We will make best endeavours to inform you when we expect security notifications and fixes to be available and facilitate coordinated disclosure when notifications and patches/mitigations are available.
+
+**Report**
+
+For all security issues, contact Arm by email at [arm-security@arm.com](mailto:arm-security@arm.com).
+
+**Secure submission using PGP**
+
+We support and encourage secure submission of vulnerability reports using PGP, using the key below. If you would like replies to be encrypted, please provide your own public key through a secure mechanism.
+
+~~~
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+-----END PGP PUBLIC KEY BLOCK-----
+~~~
+
+For more information visit https://developer.arm.com/support/arm-security-updates/report-security-vulnerabilities