diff --git a/oracles/twap.md b/oracles/twap.md
index 334208e..e968fd7 100644
--- a/oracles/twap.md
+++ b/oracles/twap.md
@@ -5,16 +5,25 @@
+* anasset’s time-weighted average price (TWAP) is the measure of an asset’s average price over a predetermined period of time (any specified duration).
+* TWAP trading algorithms seek to optimize average price while executing over a specified time period.
+* generally used to execute large orders that are expected to have significant market impact.
+
+
---
### oracle attacks
+
+
* on pos ethereum, block builder building successive block might be able to manipulate oracles for multi-block MEV extraction.
* with mev-boost, an attacker could observe the set of upcoming proposers. if they finds two successive proposers that have both been proposing blocks, then the attacker can anticipate the attack.
-
+
+
+
___