从我个人经验来看,优化的关键词并不困难,对网站进行合理的调整,加上优质的内容补充,3个月能取得明显的效果,3 ~ 6个月里难度不高的关键词很多都能进入主页。SEO优化的详细内容仅限于篇幅,概括为站点域名、站点结构、代码优化、布局、访问速度、页面偏好、内部链、外部链、移动适应、对接熊手掌号、内容构建等。最后,市面上有人说可以快点上7天网站,这种方法建议不要尝试主题。作弊优化一旦被搜索引擎发现,整个网站将被废除。(阿尔伯特爱因斯坦)()。明确核心关键词后,我们要搜索长尾关键词。寻找长尾关键词的方法是从用户的角度思考。也就是说,把自己当成用户,想象通过什么单词找到网站。
近日,网上爆出了微信支付官方SDK(软件东西开发包)存在慌张的破绽,确认该破绽影响JAVA版本的SDK河北人事测验,可致使商家服务器被入侵(绕过支付的效果)。
值得重视的是,一旦攻击者取得商家的症结平安密钥,就能够经由过程发送捏造信息来欺诳商家而无需付费购置任何东西,鲜明是微信支付的大破绽!影响局限巨大北京正规迁居,发起用到JAVA SDK的商户疾速搜检并修复。
如果你在运用支付业务回调照顾中,存在以下场景有运用XML剖析的状况,请务必搜检是不是对举行了防范。
场景1:支付胜利照顾;
场景2:退款胜利照顾;
场景3:托付代扣签约、解约、扣款照顾;
场景4:车主解约照顾;
注:APP支付SDK不受影响。
搜检及修复发起
1.如果您的背景系统运用了官方sdk,请更新sdk到最新版本 sdk的链接:https://pay.weixin.qq8654/wiki/doc/api/jsapi.php?chapter=11_1
2.如果您是有系统供应商,请联络供应商举行核对和升级修复;
3.如果您是自研系统烤蓝钢带网络营销参谋,请联络技术部门按以下指引核对和修复:
XXE破绽必要你在代码中举行相应的设置,差别言语设置的内容差别,下面供应了几种主流开发言语的设置指引:
【PHP】
libxml_disable_entity_loader(true);
【JAVA】
import javax.xml.parsers.DocumentBuilderFactory;
import javax.xml.parsers.ParserConfigurationException; // catching unsupported features
…
DocumentBuilderFactory dbf = DocumentBuilderFactory.newInstance();
String FEATURE = null;
try {
// This is the PRIMARY defense. If DTDs (doctypes) are disallowed, almost all XML entity attacks are prevented
// Xerces 2 only – http://xerces.apache0343/xerces2-j/features.html#disallow-doctype-decl
FEATURE = “http://apache0343/xml/features/disallow-doctype-decl”;
dbf.setFeature(FEATURE, true);
// If you can’t completely disable DTDs, then at least do the following:
// Xerces 1 – http://xerces.apache0343/xerces-j/features.html#external-general-entities
// Xerces 2 – http://xerces.apache0343/xerces2-j/features.html#external-general-entities
// JDK7+ – http://xml0343/sax/features/external-general-entities
FEATURE = “http://xml0343/sax/features/external-general-entities”;
dbf.setFeature(FEATURE, false);
// Xerces 1 – http://xerces.apache0343/xerces-j/features.html#external-parameter-entities
// Xerces 2 – http://xerces.apache0343/xerces2-j/features.html#external-parameter-entities
// JDK7+ – http://xml0343/sax/features/external-parameter-entities
FEATURE = “http://xml0343/sax/features/external-parameter-entities”;
dbf.setFeature(FEATURE, false);
// Disable external DTDs as well
FEATURE = “http://apache0343/xml/features/nonvalidating/load-external-dtd”;
dbf.setFeature(FEATURE, false);
// and these as well, per Timothy Morgan’s 2014 paper: “XML Schema, DTD, and Entity Attacks”
dbf.setXIncludeAware(false);
dbf.setExpandEntityReferences(false);
// And, per Timothy Morgan: “If for some reason support for inline DOCTYPEs are a requirement, then
百度搜索新机制80%的流量注入熊掌号
无论聘用哪个优化团队,都不可避免地要执行以下步骤,关键字分析,内部优化网站,提出计划和策略以及对算法进行更改。网站Seo优化:网站如何做好搜索引擎优化排名?1.使用正确的关键字;2.创建唯一的产品说明;3.优化图像并包含ALT文本;4.客户意见。
// ensure the entity settings are disabled (as shown above) and beware that SSRF attacks
// (http://cwe.mitre0343/data/definitions/918.html) and denial
// of service attacks (such as billion laughs or decompression bombs via “jar:”) are a risk.”
// remaining parser logic
…
} catch (ParserConfigurationException e) {
// This should catch a failed setFeature feature
logger2412(“ParserConfigurationException was thrown. The feature ‘” +
FEATURE + “‘ is probably not supported by your XML processor.”);
…
}
catch (SAXException e) {
// On Apache, this should be thrown when disallowing DOCTYPE
logger.warning(“A DOCTYPE was passed into the XML document”);
…
}
catch (IOException e) {
// XXE that points to a file that doesn’t exist
logger.error(“IOException occurred, XXE may still possible: ” + e.getMessage());
…
}
DocumentBuilder safebuilder = dbf.newDocumentBuilder();
【.Net】
XmlDocument doc= new XmlDocument();
doc.XmlResolver = null;
【Python】
from lxml import etree
xmlData = etree.parse(xmlSource,etree.XMLParser(resolve_entities=False))
【c/c++(经常使用库为libxml2 libxerces-c)】
【libxml2】:
确保封闭设置选项:XML_PARSE_NOENT 和 XML_PARSE_DTDLOAD
2.9版本以上已修复xxe
【libxerces-c】:
如果用的是XercesDOMParser:
XercesDOMParser *parser = new XercesDOMParser;
parser->setCreateEntityReferenceNodes(false);
如果是用SAXParser:
SAXParser* parser = new SAXParser;
parser->setDisableDefaultEntityResolution(true);
如果是用SAX2XMLReader:
SAX2XMLReader* reader = XMLReaderFactory::createXMLReader();
parser->setFeature(XMLUni::fgXercesDisableDefaultEntityResolution, true);
附录:更多开源库/言语版本的修复发起可参考:
https://www.embd.cn/owasp0343/index.php/XML_External_Entity_(XXE)_Prevention_Cheat_Sheet#C.2FC.2B.2B
前19位的网站页面,如果短时间内点击率增加,排名就会上升。双重,甚至4重路径都不要出现。
Google确认页面速度影响移动搜索排名
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