diff --git a/doc/using/platform-support.chapter.md b/doc/using/platform-support.chapter.md
index 061c1b128d42..4422694e6288 100644
--- a/doc/using/platform-support.chapter.md
+++ b/doc/using/platform-support.chapter.md
@@ -1,16 +1,16 @@
 # Platform Support {#chap-platform-support}
 
-Packages receive varying degrees of support, both in terms of maintainer attention and available computation resources for continuous integration (CI). We have 7 defined tiers denoting how well supported each platform is.
+Packages receive varying degrees of support, both in terms of maintainer and security team attention and available computation resources for continuous integration (CI). We have 7 defined tiers denoting how well supported each platform is.
 
 ## Tiers {#sec-platform-tiers}
 
 ### Tier 1 {#sec-platform-tier1}
 
-[Tier 1](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-1) platforms receive the highest level of support where problems can block updates, platform-specific patches are freely applied, and most packages are expected to work.
+[Tier 1](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-1) platforms receive the highest level of support where problems can block updates, security fixes are treated with urgency, platform-specific patches are freely applied, and most packages are expected to work.
 
 ### Tier 2 {#sec-platform-tier2}
 
-[Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) platforms are expected to remain functional with updates, receive platform-specific patches as needed, and have many packages built by Hydra with full ofBorg support.
+[Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) platforms are expected to remain functional and secure with updates, receive platform-specific patches as needed, and have many packages built by Hydra with full ofBorg support.
 
 ### Tier 3 {#sec-platform-tier3}
 
@@ -22,25 +22,25 @@ Platform Tiers [4 through 7](https://github.com/NixOS/rfcs/blob/master/rfcs/0046
 
 ## Breakdown {#sec-platform-breakdown}
 
-| Triple                                | Support Tier | Channel Blockers | Hydra Support | Ofborg Support | Bootstrap Tarballs | Cross Compiling Support |
-| ------------------------------------- | ------------ | ---------------- | ------------- | -------------- | ------------------ | ----------------------- |
-| `x86_64-unknown-linux-gnu`            | [Tier 1](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-1) | Many | ✔️            | ✔️            | ✔️                 | ✔️                      |
-| `aarch64-unknown-linux-gnu`           | [Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) | Some | ✔️            | ✔️            | ✔️                 | ✔️                      |
-| `x86_64-unknown-linux-musl`           | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | Limited        | ❌             | ✔️                 | ✔️                      |
-| `aarch64-unknown-linux-musl`          | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | Limited        | ❌             | ✔️                 | ✔️                      |
-| `x86_64-unknown-unknown-freebsd`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `arm64-apple-darwin`                  | [Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) | Some | ✔️            | ✔️            | ✔️                 | ❌                       |
-| `i686-unknown-linux-gnu`              | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | Limited        | ❌             | ✔️                 | ✔️                      |
-| `riscv32-unknown-linux-gnu`           | [Tier 4](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-4) | None | ❌             | ❌             | ❌                  | ✔️                      |
-| `riscv64-unknown-linux-gnu`           | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `loongarch64-unknown-linux-gnu`       | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `armv6l-unknown-linux-gnueabihf`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `armv6l-unknown-linux-musleabihf`     | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `armv7l-unknown-linux-gnueabihf`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `armv5tel-unknown-linux-gnueabi`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `mips64el-unknown-linux-gnuabi64`     | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `mips64el-unknown-linux-gnuabin32`    | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `mipsel-unknown-linux-gnu`            | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `powerpc64-unknown-linux-gnuabielfv2` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `powerpc64le-unknown-linux-gnu`       | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
-| `s390x-unknown-linux-gnu`             | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None | ❌             | ❌             | ✔️                 | ✔️                      |
+| Triple                                | Support Tier                                                                                   | Channel Blockers | Hydra Support | Security Support | Ofborg Support | Bootstrap Tarballs | Cross Compiling Support |
+|---------------------------------------|------------------------------------------------------------------------------------------------|------------------|---------------|------------------|----------------|--------------------|-------------------------|
+| `x86_64-unknown-linux-gnu`            | [Tier 1](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-1) | Many             | ✔️             | ✔️                | ✔️              | ✔️                  | ✔️                       |
+| `aarch64-unknown-linux-gnu`           | [Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) | Some             | ✔️             | ✔️                | ✔️              | ✔️                  | ✔️                       |
+| `x86_64-unknown-linux-musl`           | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | Limited       | ❌               | ❌             | ✔️                  | ✔️                       |
+| `aarch64-unknown-linux-musl`          | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | Limited       | ❌               | ❌             | ✔️                  | ✔️                       |
+| `x86_64-unknown-unknown-freebsd`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `arm64-apple-darwin`                  | [Tier 2](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-2) | Some             | ✔️             | ✔️                | ✔️              | ✔️                  | ❌                      |
+| `i686-unknown-linux-gnu`              | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | Limited       | ❌               | ❌             | ✔️                  | ✔️                       |
+| `riscv32-unknown-linux-gnu`           | [Tier 4](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-4) | None             | ❌            | ❌               | ❌             | ❌                 | ✔️                       |
+| `riscv64-unknown-linux-gnu`           | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `loongarch64-unknown-linux-gnu`       | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `armv6l-unknown-linux-gnueabihf`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `armv6l-unknown-linux-musleabihf`     | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `armv7l-unknown-linux-gnueabihf`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `armv5tel-unknown-linux-gnueabi`      | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `mips64el-unknown-linux-gnuabi64`     | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `mips64el-unknown-linux-gnuabin32`    | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `mipsel-unknown-linux-gnu`            | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `powerpc64-unknown-linux-gnuabielfv2` | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `powerpc64le-unknown-linux-gnu`       | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |
+| `s390x-unknown-linux-gnu`             | [Tier 3](https://github.com/NixOS/rfcs/blob/master/rfcs/0046-platform-support-tiers.md#tier-3) | None             | ❌            | ❌               | ❌             | ✔️                  | ✔️                       |