diff --git a/lib/core/option.py b/lib/core/option.py
index 8de084113..9e37d3cc4 100644
--- a/lib/core/option.py
+++ b/lib/core/option.py
@@ -1833,6 +1833,8 @@ def _setKnowledgeBaseAttributes(flushAll=True):
     kb.cache.regex = {}
     kb.cache.stdev = {}
 
+    kb.captchaDetected = None
+
     kb.chars = AttribDict()
     kb.chars.delimiter = randomStr(length=6, lowercase=True)
     kb.chars.start = "%s%s%s" % (KB_CHARS_BOUNDARY_CHAR, randomStr(length=3, alphabet=KB_CHARS_LOW_FREQUENCY_ALPHABET), KB_CHARS_BOUNDARY_CHAR)
diff --git a/lib/core/settings.py b/lib/core/settings.py
index 3dbcbc8f1..66a1a26b4 100644
--- a/lib/core/settings.py
+++ b/lib/core/settings.py
@@ -19,7 +19,7 @@ from lib.core.enums import OS
 from lib.core.revision import getRevisionNumber
 
 # sqlmap version (<major>.<minor>.<month>.<monthly commit>)
-VERSION = "1.0.6.7"
+VERSION = "1.0.6.8"
 REVISION = getRevisionNumber()
 STABLE = VERSION.count('.') <= 2
 VERSION_STRING = "sqlmap/%s#%s" % (VERSION, "stable" if STABLE else "dev")
diff --git a/lib/request/basic.py b/lib/request/basic.py
index bdc7bf0b6..9c2352087 100644
--- a/lib/request/basic.py
+++ b/lib/request/basic.py
@@ -354,6 +354,15 @@ def processResponse(page, responseHeaders):
                     conf.paramDict[PLACE.POST][name] = value
                 conf.parameters[PLACE.POST] = re.sub("(?i)(%s=)[^&]+" % name, r"\g<1>%s" % value, conf.parameters[PLACE.POST])
 
+    page += "<form>\n</form><form>\ncaptcha</form>"
+    if not kb.captchaDetected and re.search(r"(?i)captcha", page or ""):
+        for match in re.finditer(r"(?si)<form.+?</form>", page):
+            if re.search(r"(?i)captcha", match.group(0)):
+                kb.captchaDetected = True
+                errMsg = "potential CAPTCHA protection mechanism detected"
+                singleTimeLogMessage(errMsg, logging.ERROR)
+                break
+
     if re.search(BLOCKED_IP_REGEX, page):
         errMsg = "it appears that you have been blocked by the target server"
         singleTimeLogMessage(errMsg, logging.ERROR)