-There are multiple numbers of security systems are available to protect your computer/resources. Among them, password based systems are the most commonly used system due to its simplicity, applicability and cost effectiveness But these types of systems have higher sensitivity to cyber-attack. Most of the advanced methods for authentication based on password security encrypt the contents of password before storing or transmitting in the physical domain. But all conventional encryption methods are having its own limitations, generally either in terms of complexity or in terms of efficiency.In this paper an enhanced password based security system has been proposed based on user typing behavior, which will attempt to identify authenticity of any user failing to login in first few attempts by analyzing the basic user behaviors/activities and finally training them through neural network and classifying them as genuine or intruder.

Among the various means of available resource protection including biometrics, password based system is most simple, user friendly, cost effective and commonly used, but this system having high sensitivity with attacks. Most of the advanced methods for authentication based on password encrypt the contents of password before storing or transmitting in physical domain. But all conventional cryptographic based encryption methods are having its own limitations, generally either in terms of complexity, efficiency or in terms of security. In this paper a simple method is developed that provide more secure and efficient means of authentication, at the same time simple in design for critical systems. Apart from protection, a step toward perfect security has taken by adding the feature of intruder detection along with the protection system. This is possible by merging various security systems with each other i.e password based security with keystroke dynamic, thumb impression with retina scan associated with the users. This new method is centrally based on user behavior and users related security system, which provides the robust security to the critical systems with intruder detection facilities.

Pancreas will respond differently to stress situations, which results in histopathological changes in the gland. Glucagon and insulin are both secreted by pancreas, the former by alpha cells and latter by beta cells. Insulin may decrease during stress. These endocrine secretions enter the portal vein so that liver is exposed to high concentration of these hormones. This along with increase in its antagonistic hormones can contribute to the stressed induced hyperglycaemia. The aim is to find and compare the weight and histopathological changes of Pancreas in suicide and non suicide deaths. The pancreas were dissected during the autopsy from the cases with known history of death due to alleged suicide with clear history of non administration of steroids and was declared brought dead at GMCH, Chandigarh. The removed glands were preserved and fixed with 10% formalin for more than 2 weeks. After the period of fixation, grossing and section of gland was done, and slides of each subject was prepared and studied.In suicide group maximum weight is 78.2 grams and minimum is 67.3 grams. In non suicide maximum weight is 78.2 grams and minimum is 65.5 grams. The mean weight of the pancreas in the suicidal group was 71.27 grams and the standard deviation was 2.18 grams, whereas the mean weight of the pancreas in the non- suicidal group was 70.87 grams and the standard deviation was 2.63 grams. The P value comes out to be 0.41. Of the total 100 cases, only three (3%) revealed significant pathological findings and the rest 97 (97%) were histologically normal. In the study group there was one case each of pancreatic abscess, and necrotising pancreatitis. Pancreatitis abscess was diagnosed when the histology revealed focus of necrosis of the pancreatic parenchyma with dense neutrophilic infiltration. Necrotising pancreatitis showed extensive necrotising inflammation of the pancreatic parenchyma. In the control group there was only 1 case (2%), of chronic pancreatitis. Chronic pancreatitis was labelled when fibrosis of the pancreatic parenchyma with mild lymphomononuclear cell infiltration. There was no significant difference between the weight of the pancreas in the suicidal and the non-suicidal group. Pathological findings were twice as common in the suicidal group as compared to the non-suicidal group.

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