diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc16_04.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc16_04.java
index 4527c0c..9a7e62a 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc16_04.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc16_04.java
@@ -28,7 +28,7 @@
         AdbUtils.runCommandLine("logcat -c" , getDevice());
         AdbUtils.runPoc("CVE-2016-2419", getDevice(), 60);
         String logcat = AdbUtils.runCommandLine("logcat -d", getDevice());
-        assertNotMatches("[\\s\\n\\S]*IOMX_InfoLeak b26323455[\\s\\n\\S]*", logcat);
+        assertNotMatchesMultiLine("IOMX_InfoLeak b26323455", logcat);
     }
 
     /**
diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc16_05.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc16_05.java
index 886ebaf..d866a5a 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc16_05.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc16_05.java
@@ -29,7 +29,7 @@
         AdbUtils.runPoc("CVE-2016-2460", getDevice(), 60);
 
         String logcat =  AdbUtils.runCommandLine("logcat -d", getDevice());
-        assertNotMatches("[\\s\\n\\S]*IGraphicBufferProducer_Info is Leaked[\\s\\n\\S]*", logcat);
+        assertNotMatchesMultiLine("IGraphicBufferProducer_Info is Leaked", logcat);
     }
 
     /**
diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc16_11.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc16_11.java
index b6bb97b..bb18b0d 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc16_11.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc16_11.java
@@ -29,7 +29,7 @@
         AdbUtils.runCommandLine("logcat -c", getDevice());
         AdbUtils.runPoc("CVE-2012-6702", getDevice(), 60);
         String logcat = AdbUtils.runCommandLine("logcat -d", getDevice());
-        assertNotMatches("[\\s\\n\\S]*fail: encountered same random values![\\s\\n\\S]*", logcat);
+        assertNotMatchesMultiLine("fail: encountered same random values!", logcat);
     }
 
     /**
diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc17_02.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc17_02.java
index 27ded73..e2e5134 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc17_02.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc17_02.java
@@ -27,7 +27,7 @@
       AdbUtils.runCommandLine("logcat -c", getDevice());
       AdbUtils.runPoc("CVE-2017-0426", getDevice(), 60);
       String logcatOut = AdbUtils.runCommandLine("logcat -d", getDevice());
-      assertNotMatches("[\\s\\n\\S]*Bugreports file in wrong path[\\s\\n\\S]*", logcatOut);
+      assertNotMatchesMultiLine("Bugreports file in wrong path", logcatOut);
   }
 
    /**
diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc17_11.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc17_11.java
index cdeec39..e1c4977 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc17_11.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc17_11.java
@@ -34,8 +34,8 @@
         // Wait for intent to be processed before checking logcat
         Thread.sleep(5000);
         String logcat =  AdbUtils.runCommandLine("logcat -d", getDevice());
-        assertNotMatches("[\\s\\n\\S]*Fatal signal 11 \\(SIGSEGV\\)" +
+        assertNotMatchesMultiLine("Fatal signal 11 \\(SIGSEGV\\)" +
                          "[\\s\\n\\S]*>>> /system/bin/" +
-                         "mediaserver <<<[\\s\\n\\S]*", logcat);
+                         "mediaserver <<<", logcat);
     }
 }
diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc18_02.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc18_02.java
index a4eb539..c9f48f9 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc18_02.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc18_02.java
@@ -46,7 +46,7 @@
             AdbUtils.runPoc("CVE-2017-13273", getDevice(), 60);
             String dmesgOut = AdbUtils.runCommandLine("cat /sys/fs/pstore/console-ramoops",
                               getDevice());
-            assertNotMatches("[\\s\\n\\S]*CVE-2017-132736 Tainted:" + "[\\s\\n\\S]*" +
+            assertNotMatchesMultiLine("CVE-2017-132736 Tainted:" + "[\\s\\n\\S]*" +
                  "Kernel panic - not syncing: Fatal exception in interrupt", dmesgOut);
         }
         AdbUtils.runCommandLine("setenforce 1",getDevice());
diff --git a/hostsidetests/securitybulletin/src/android/security/cts/Poc18_07.java b/hostsidetests/securitybulletin/src/android/security/cts/Poc18_07.java
index 4d8d73b..9595d5a 100644
--- a/hostsidetests/securitybulletin/src/android/security/cts/Poc18_07.java
+++ b/hostsidetests/securitybulletin/src/android/security/cts/Poc18_07.java
@@ -30,6 +30,6 @@
        AdbUtils.runCommandLine("logcat -c" , getDevice());
        AdbUtils.runPoc("CVE-2018-9424", getDevice(), 60);
        String result = AdbUtils.runCommandLine("logcat -d", getDevice());
-       assertNotMatches("[\\s\\n\\S]*Fatal signal [\\s\\n\\S]*", result);
+       assertNotMatchesMultiLine("Fatal signal", result);
      }
 }